Home / 487,555.20-731,332.80-408,823.20

Finding the Fourth Proportional to 487,555.20, 731,332.80 and 408,823.20

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Solution

The fourth proportional to 487,555.20, 731,332.80 and 408,823.20 is: 613,234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,555.20 : 731,332.80 = 408,823.20 : x
  2. Step 2: Convert to fraction form
    487,555.20/731,332.80 = 408,823.20/x
  3. Step 3: Cross multiply
    487,555.20x = 731,332.80 × 408,823.20
  4. Step 4: Simplify right side
    487,555.20x = 298,985,815,560.96
  5. Step 5: Solve for x
    x = 298,985,815,560.96/487,555.20
  6. Step 6: Final answer
    x = 613,234.80

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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.