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Finding the Fourth Proportional to 520,915.60, 730,331.60 and 520,915.60

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Solution

The fourth proportional to 520,915.60, 730,331.60 and 520,915.60 is: 730,331.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,915.60 : 730,331.60 = 520,915.60 : x
  2. Step 2: Convert to fraction form
    520,915.60/730,331.60 = 520,915.60/x
  3. Step 3: Cross multiply
    520,915.60x = 730,331.60 × 520,915.60
  4. Step 4: Simplify right side
    520,915.60x = 380,441,123,612.96
  5. Step 5: Solve for x
    x = 380,441,123,612.96/520,915.60
  6. Step 6: Final answer
    x = 730,331.60

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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.