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Finding the Fourth Proportional to 521,490.60, 731,136.60 and 521,490.60

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Solution

The fourth proportional to 521,490.60, 731,136.60 and 521,490.60 is: 731,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,490.60 : 731,136.60 = 521,490.60 : x
  2. Step 2: Convert to fraction form
    521,490.60/731,136.60 = 521,490.60/x
  3. Step 3: Cross multiply
    521,490.60x = 731,136.60 × 521,490.60
  4. Step 4: Simplify right side
    521,490.60x = 381,280,864,215.96
  5. Step 5: Solve for x
    x = 381,280,864,215.96/521,490.60
  6. Step 6: Final answer
    x = 731,136.60

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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.