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Finding the Fourth Proportional to 497,998.40, 747,775.20 and 288,046.40

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Solution

The fourth proportional to 497,998.40, 747,775.20 and 288,046.40 is: 432,519.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,998.40 : 747,775.20 = 288,046.40 : x
  2. Step 2: Convert to fraction form
    497,998.40/747,775.20 = 288,046.40/x
  3. Step 3: Cross multiply
    497,998.40x = 747,775.20 × 288,046.40
  4. Step 4: Simplify right side
    497,998.40x = 215,393,954,369.28
  5. Step 5: Solve for x
    x = 215,393,954,369.28/497,998.40
  6. Step 6: Final answer
    x = 432,519.37

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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.