Home / 521,531.20-781,713.60-296,999.20

Finding the Fourth Proportional to 521,531.20, 781,713.60 and 296,999.20

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Solution

The fourth proportional to 521,531.20, 781,713.60 and 296,999.20 is: 445,166.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,531.20 : 781,713.60 = 296,999.20 : x
  2. Step 2: Convert to fraction form
    521,531.20/781,713.60 = 296,999.20/x
  3. Step 3: Cross multiply
    521,531.20x = 781,713.60 × 296,999.20
  4. Step 4: Simplify right side
    521,531.20x = 232,168,313,829.12
  5. Step 5: Solve for x
    x = 232,168,313,829.12/521,531.20
  6. Step 6: Final answer
    x = 445,166.68

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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.