Home / 498,890.80-747,515.40-288,161.20

Finding the Fourth Proportional to 498,890.80, 747,515.40 and 288,161.20

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Solution

The fourth proportional to 498,890.80, 747,515.40 and 288,161.20 is: 431,767.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,890.80 : 747,515.40 = 288,161.20 : x
  2. Step 2: Convert to fraction form
    498,890.80/747,515.40 = 288,161.20/x
  3. Step 3: Cross multiply
    498,890.80x = 747,515.40 × 288,161.20
  4. Step 4: Simplify right side
    498,890.80x = 215,404,934,682.48
  5. Step 5: Solve for x
    x = 215,404,934,682.48/498,890.80
  6. Step 6: Final answer
    x = 431,767.70

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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.