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Finding the Fourth Proportional to 656,781.08, 985,213.13 and 277,631.15

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Solution

The fourth proportional to 656,781.08, 985,213.13 and 277,631.15 is: 416,464.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,781.08 : 985,213.13 = 277,631.15 : x
  2. Step 2: Convert to fraction form
    656,781.08/985,213.13 = 277,631.15/x
  3. Step 3: Cross multiply
    656,781.08x = 985,213.13 × 277,631.15
  4. Step 4: Simplify right side
    656,781.08x = 273,525,850,045.01
  5. Step 5: Solve for x
    x = 273,525,850,045.01/656,781.08
  6. Step 6: Final answer
    x = 416,464.27

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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.