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Finding the Fourth Proportional to 498,001.40, 747,779.70 and 288,049.40

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Solution

The fourth proportional to 498,001.40, 747,779.70 and 288,049.40 is: 432,523.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,001.40 : 747,779.70 = 288,049.40 : x
  2. Step 2: Convert to fraction form
    498,001.40/747,779.70 = 288,049.40/x
  3. Step 3: Cross multiply
    498,001.40x = 747,779.70 × 288,049.40
  4. Step 4: Simplify right side
    498,001.40x = 215,397,493,917.18
  5. Step 5: Solve for x
    x = 215,397,493,917.18/498,001.40
  6. Step 6: Final answer
    x = 432,523.87

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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.