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Finding the Fourth Proportional to 710,060.88, 979,887.62 and 387,770.97

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Solution

The fourth proportional to 710,060.88, 979,887.62 and 387,770.97 is: 535,125.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,060.88 : 979,887.62 = 387,770.97 : x
  2. Step 2: Convert to fraction form
    710,060.88/979,887.62 = 387,770.97/x
  3. Step 3: Cross multiply
    710,060.88x = 979,887.62 × 387,770.97
  4. Step 4: Simplify right side
    710,060.88x = 379,971,972,059.95
  5. Step 5: Solve for x
    x = 379,971,972,059.95/710,060.88
  6. Step 6: Final answer
    x = 535,125.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.