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Finding the Fourth Proportional to 917,132.70, 1,375,893.45 and 277,383.90

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Solution

The fourth proportional to 917,132.70, 1,375,893.45 and 277,383.90 is: 416,134.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,132.70 : 1,375,893.45 = 277,383.90 : x
  2. Step 2: Convert to fraction form
    917,132.70/1,375,893.45 = 277,383.90/x
  3. Step 3: Cross multiply
    917,132.70x = 1,375,893.45 × 277,383.90
  4. Step 4: Simplify right side
    917,132.70x = 381,650,691,145.46
  5. Step 5: Solve for x
    x = 381,650,691,145.46/917,132.70
  6. Step 6: Final answer
    x = 416,134.65

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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.