Home / 718,540.48-991,572.06-396,280.36

Finding the Fourth Proportional to 718,540.48, 991,572.06 and 396,280.36

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Solution

The fourth proportional to 718,540.48, 991,572.06 and 396,280.36 is: 546,859.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,540.48 : 991,572.06 = 396,280.36 : x
  2. Step 2: Convert to fraction form
    718,540.48/991,572.06 = 396,280.36/x
  3. Step 3: Cross multiply
    718,540.48x = 991,572.06 × 396,280.36
  4. Step 4: Simplify right side
    718,540.48x = 392,940,532,902.74
  5. Step 5: Solve for x
    x = 392,940,532,902.74/718,540.48
  6. Step 6: Final answer
    x = 546,859.28

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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.