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Finding the Fourth Proportional to 702,951.70, 1,054,881.15 and 387,634.90

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Solution

The fourth proportional to 702,951.70, 1,054,881.15 and 387,634.90 is: 581,702.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,951.70 : 1,054,881.15 = 387,634.90 : x
  2. Step 2: Convert to fraction form
    702,951.70/1,054,881.15 = 387,634.90/x
  3. Step 3: Cross multiply
    702,951.70x = 1,054,881.15 × 387,634.90
  4. Step 4: Simplify right side
    702,951.70x = 408,908,749,092.14
  5. Step 5: Solve for x
    x = 408,908,749,092.14/702,951.70
  6. Step 6: Final answer
    x = 581,702.48

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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.