Home / 521,521.20-781,698.60-296,989.20

Finding the Fourth Proportional to 521,521.20, 781,698.60 and 296,989.20

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Solution

The fourth proportional to 521,521.20, 781,698.60 and 296,989.20 is: 445,151.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,521.20 : 781,698.60 = 296,989.20 : x
  2. Step 2: Convert to fraction form
    521,521.20/781,698.60 = 296,989.20/x
  3. Step 3: Cross multiply
    521,521.20x = 781,698.60 × 296,989.20
  4. Step 4: Simplify right side
    521,521.20x = 232,156,041,855.12
  5. Step 5: Solve for x
    x = 232,156,041,855.12/521,521.20
  6. Step 6: Final answer
    x = 445,151.69

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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.