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Finding the Fourth Proportional to 515,387.92, 773,106.16 and 425,263.44

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Solution

The fourth proportional to 515,387.92, 773,106.16 and 425,263.44 is: 637,915.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,387.92 : 773,106.16 = 425,263.44 : x
  2. Step 2: Convert to fraction form
    515,387.92/773,106.16 = 425,263.44/x
  3. Step 3: Cross multiply
    515,387.92x = 773,106.16 × 425,263.44
  4. Step 4: Simplify right side
    515,387.92x = 328,773,785,086.79
  5. Step 5: Solve for x
    x = 328,773,785,086.79/515,387.92
  6. Step 6: Final answer
    x = 637,915.19

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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.