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Finding the Fourth Proportional to 519,785.61, 717,310.13 and 304,929.33

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Solution

The fourth proportional to 519,785.61, 717,310.13 and 304,929.33 is: 420,805.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,785.61 : 717,310.13 = 304,929.33 : x
  2. Step 2: Convert to fraction form
    519,785.61/717,310.13 = 304,929.33/x
  3. Step 3: Cross multiply
    519,785.61x = 717,310.13 × 304,929.33
  4. Step 4: Simplify right side
    519,785.61x = 218,728,897,343.11
  5. Step 5: Solve for x
    x = 218,728,897,343.11/519,785.61
  6. Step 6: Final answer
    x = 420,805.99

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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.