Home / 1,212,475.80-1,818,713.70-413,491.80

Finding the Fourth Proportional to 1,212,475.80, 1,818,713.70 and 413,491.80

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Solution

The fourth proportional to 1,212,475.80, 1,818,713.70 and 413,491.80 is: 620,237.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,475.80 : 1,818,713.70 = 413,491.80 : x
  2. Step 2: Convert to fraction form
    1,212,475.80/1,818,713.70 = 413,491.80/x
  3. Step 3: Cross multiply
    1,212,475.80x = 1,818,713.70 × 413,491.80
  4. Step 4: Simplify right side
    1,212,475.80x = 752,023,201,497.66
  5. Step 5: Solve for x
    x = 752,023,201,497.66/1,212,475.80
  6. Step 6: Final answer
    x = 620,237.70

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.