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Finding the Fourth Proportional to 520,061.90, 729,069.70 and 520,061.90

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Solution

The fourth proportional to 520,061.90, 729,069.70 and 520,061.90 is: 729,069.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,061.90 : 729,069.70 = 520,061.90 : x
  2. Step 2: Convert to fraction form
    520,061.90/729,069.70 = 520,061.90/x
  3. Step 3: Cross multiply
    520,061.90x = 729,069.70 × 520,061.90
  4. Step 4: Simplify right side
    520,061.90x = 379,161,373,414.43
  5. Step 5: Solve for x
    x = 379,161,373,414.43/520,061.90
  6. Step 6: Final answer
    x = 729,069.70

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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.