Home / 521,530.20-781,712.10-296,998.20

Finding the Fourth Proportional to 521,530.20, 781,712.10 and 296,998.20

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Solution

The fourth proportional to 521,530.20, 781,712.10 and 296,998.20 is: 445,165.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,530.20 : 781,712.10 = 296,998.20 : x
  2. Step 2: Convert to fraction form
    521,530.20/781,712.10 = 296,998.20/x
  3. Step 3: Cross multiply
    521,530.20x = 781,712.10 × 296,998.20
  4. Step 4: Simplify right side
    521,530.20x = 232,167,086,618.22
  5. Step 5: Solve for x
    x = 232,167,086,618.22/521,530.20
  6. Step 6: Final answer
    x = 445,165.18

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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.