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Finding the Fourth Proportional to 487,680, 730,855.80 and 274,549.56

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Solution

The fourth proportional to 487,680, 730,855.80 and 274,549.56 is: 411,450.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,680 : 730,855.80 = 274,549.56 : x
  2. Step 2: Convert to fraction form
    487,680/730,855.80 = 274,549.56/x
  3. Step 3: Cross multiply
    487,680x = 730,855.80 × 274,549.56
  4. Step 4: Simplify right side
    487,680x = 200,656,138,313.45
  5. Step 5: Solve for x
    x = 200,656,138,313.45/487,680
  6. Step 6: Final answer
    x = 411,450.41

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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.