Home / 513,001.64-707,929.90-280,418.24

Finding the Fourth Proportional to 513,001.64, 707,929.90 and 280,418.24

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Solution

The fourth proportional to 513,001.64, 707,929.90 and 280,418.24 is: 386,970.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,001.64 : 707,929.90 = 280,418.24 : x
  2. Step 2: Convert to fraction form
    513,001.64/707,929.90 = 280,418.24/x
  3. Step 3: Cross multiply
    513,001.64x = 707,929.90 × 280,418.24
  4. Step 4: Simplify right side
    513,001.64x = 198,516,457,670.16
  5. Step 5: Solve for x
    x = 198,516,457,670.16/513,001.64
  6. Step 6: Final answer
    x = 386,970.41

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1.5x scale

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.