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Finding the Fourth Proportional to 680,471.80, 939,037.14 and 425,963.32

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Solution

The fourth proportional to 680,471.80, 939,037.14 and 425,963.32 is: 587,820.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,471.80 : 939,037.14 = 425,963.32 : x
  2. Step 2: Convert to fraction form
    680,471.80/939,037.14 = 425,963.32/x
  3. Step 3: Cross multiply
    680,471.80x = 939,037.14 × 425,963.32
  4. Step 4: Simplify right side
    680,471.80x = 399,995,377,757.71
  5. Step 5: Solve for x
    x = 399,995,377,757.71/680,471.80
  6. Step 6: Final answer
    x = 587,820.65

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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.