Home / 527,505.22-727,914.17-309,690.96

Finding the Fourth Proportional to 527,505.22, 727,914.17 and 309,690.96

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Solution

The fourth proportional to 527,505.22, 727,914.17 and 309,690.96 is: 427,348.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,505.22 : 727,914.17 = 309,690.96 : x
  2. Step 2: Convert to fraction form
    527,505.22/727,914.17 = 309,690.96/x
  3. Step 3: Cross multiply
    527,505.22x = 727,914.17 × 309,690.96
  4. Step 4: Simplify right side
    527,505.22x = 225,428,438,104.90
  5. Step 5: Solve for x
    x = 225,428,438,104.90/527,505.22
  6. Step 6: Final answer
    x = 427,348.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.