Home / 521,315.60-781,817.40-271,861.52

Finding the Fourth Proportional to 521,315.60, 781,817.40 and 271,861.52

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Solution

The fourth proportional to 521,315.60, 781,817.40 and 271,861.52 is: 407,710.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,315.60 : 781,817.40 = 271,861.52 : x
  2. Step 2: Convert to fraction form
    521,315.60/781,817.40 = 271,861.52/x
  3. Step 3: Cross multiply
    521,315.60x = 781,817.40 × 271,861.52
  4. Step 4: Simplify right side
    521,315.60x = 212,546,066,726.45
  5. Step 5: Solve for x
    x = 212,546,066,726.45/521,315.60
  6. Step 6: Final answer
    x = 407,710.93

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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.