Home / 498,779.13-688,315.20-272,425.17

Finding the Fourth Proportional to 498,779.13, 688,315.20 and 272,425.17

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Solution

The fourth proportional to 498,779.13, 688,315.20 and 272,425.17 is: 375,946.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,779.13 : 688,315.20 = 272,425.17 : x
  2. Step 2: Convert to fraction form
    498,779.13/688,315.20 = 272,425.17/x
  3. Step 3: Cross multiply
    498,779.13x = 688,315.20 × 272,425.17
  4. Step 4: Simplify right side
    498,779.13x = 187,514,385,373.58
  5. Step 5: Solve for x
    x = 187,514,385,373.58/498,779.13
  6. Step 6: Final answer
    x = 375,946.73

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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.