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Finding the Fourth Proportional to 981,199, 1,354,166.90 and 545,659.77

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Solution

The fourth proportional to 981,199, 1,354,166.90 and 545,659.77 is: 753,072.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,199 : 1,354,166.90 = 545,659.77 : x
  2. Step 2: Convert to fraction form
    981,199/1,354,166.90 = 545,659.77/x
  3. Step 3: Cross multiply
    981,199x = 1,354,166.90 × 545,659.77
  4. Step 4: Simplify right side
    981,199x = 738,914,399,195.61
  5. Step 5: Solve for x
    x = 738,914,399,195.61/981,199
  6. Step 6: Final answer
    x = 753,072.92

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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.