Home / 513,001.71-707,929.99-280,418.31

Finding the Fourth Proportional to 513,001.71, 707,929.99 and 280,418.31

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Solution

The fourth proportional to 513,001.71, 707,929.99 and 280,418.31 is: 386,970.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,001.71 : 707,929.99 = 280,418.31 : x
  2. Step 2: Convert to fraction form
    513,001.71/707,929.99 = 280,418.31/x
  3. Step 3: Cross multiply
    513,001.71x = 707,929.99 × 280,418.31
  4. Step 4: Simplify right side
    513,001.71x = 198,516,531,394.12
  5. Step 5: Solve for x
    x = 198,516,531,394.12/513,001.71
  6. Step 6: Final answer
    x = 386,970.51

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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.