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Finding the Fourth Proportional to 521,505.10, 731,156.90 and 521,505.10

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Solution

The fourth proportional to 521,505.10, 731,156.90 and 521,505.10 is: 731,156.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,505.10 : 731,156.90 = 521,505.10 : x
  2. Step 2: Convert to fraction form
    521,505.10/731,156.90 = 521,505.10/x
  3. Step 3: Cross multiply
    521,505.10x = 731,156.90 × 521,505.10
  4. Step 4: Simplify right side
    521,505.10x = 381,302,052,250.19
  5. Step 5: Solve for x
    x = 381,302,052,250.19/521,505.10
  6. Step 6: Final answer
    x = 731,156.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.