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Finding the Fourth Proportional to 1,288,663, 1,778,250.84 and 744,834

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Solution

The fourth proportional to 1,288,663, 1,778,250.84 and 744,834 is: 1,027,810.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,663 : 1,778,250.84 = 744,834 : x
  2. Step 2: Convert to fraction form
    1,288,663/1,778,250.84 = 744,834/x
  3. Step 3: Cross multiply
    1,288,663x = 1,778,250.84 × 744,834
  4. Step 4: Simplify right side
    1,288,663x = 1,324,501,686,160.56
  5. Step 5: Solve for x
    x = 1,324,501,686,160.56/1,288,663
  6. Step 6: Final answer
    x = 1,027,810.75

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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.