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Finding the Fourth Proportional to 499,417.80, 749,126.70 and 331,456.20

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Solution

The fourth proportional to 499,417.80, 749,126.70 and 331,456.20 is: 497,184.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,417.80 : 749,126.70 = 331,456.20 : x
  2. Step 2: Convert to fraction form
    499,417.80/749,126.70 = 331,456.20/x
  3. Step 3: Cross multiply
    499,417.80x = 749,126.70 × 331,456.20
  4. Step 4: Simplify right side
    499,417.80x = 248,302,689,300.54
  5. Step 5: Solve for x
    x = 248,302,689,300.54/499,417.80
  6. Step 6: Final answer
    x = 497,184.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.