Home / 718,455.35-991,475.30-396,176.87

Finding the Fourth Proportional to 718,455.35, 991,475.30 and 396,176.87

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Solution

The fourth proportional to 718,455.35, 991,475.30 and 396,176.87 is: 546,727.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,455.35 : 991,475.30 = 396,176.87 : x
  2. Step 2: Convert to fraction form
    718,455.35/991,475.30 = 396,176.87/x
  3. Step 3: Cross multiply
    718,455.35x = 991,475.30 × 396,176.87
  4. Step 4: Simplify right side
    718,455.35x = 392,799,581,036.31
  5. Step 5: Solve for x
    x = 392,799,581,036.31/718,455.35
  6. Step 6: Final answer
    x = 546,727.89

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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.