Home / 1,372,181,256.42-1,893,638,166.21-745,690,041.78

Finding the Fourth Proportional to 1,372,181,256.42, 1,893,638,166.21 and 745,690,041.78

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Solution

The fourth proportional to 1,372,181,256.42, 1,893,638,166.21 and 745,690,041.78 is: 1,029,067,491.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372,181,256.42 : 1,893,638,166.21 = 745,690,041.78 : x
  2. Step 2: Convert to fraction form
    1,372,181,256.42/1,893,638,166.21 = 745,690,041.78/x
  3. Step 3: Cross multiply
    1,372,181,256.42x = 1,893,638,166.21 × 745,690,041.78
  4. Step 4: Simplify right side
    1,372,181,256.42x = 1,412,067,123,277,337,344
  5. Step 5: Solve for x
    x = 1,412,067,123,277,337,344/1,372,181,256.42
  6. Step 6: Final answer
    x = 1,029,067,491.39

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Half scale
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Double scale
Find fourth proportional to 1,372,181,257.42, 1,893,638,167.59 and 745,690,042.78
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.