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Finding the Fourth Proportional to 544,072.60, 815,312.10 and 487,912.60

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Solution

The fourth proportional to 544,072.60, 815,312.10 and 487,912.60 is: 731,154.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,072.60 : 815,312.10 = 487,912.60 : x
  2. Step 2: Convert to fraction form
    544,072.60/815,312.10 = 487,912.60/x
  3. Step 3: Cross multiply
    544,072.60x = 815,312.10 × 487,912.60
  4. Step 4: Simplify right side
    544,072.60x = 397,801,046,522.46
  5. Step 5: Solve for x
    x = 397,801,046,522.46/544,072.60
  6. Step 6: Final answer
    x = 731,154.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.