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Finding the Fourth Proportional to 981,347.45, 1,354,402.91 and 551,662.97

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Solution

The fourth proportional to 981,347.45, 1,354,402.91 and 551,662.97 is: 761,375.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,347.45 : 1,354,402.91 = 551,662.97 : x
  2. Step 2: Convert to fraction form
    981,347.45/1,354,402.91 = 551,662.97/x
  3. Step 3: Cross multiply
    981,347.45x = 1,354,402.91 × 551,662.97
  4. Step 4: Simplify right side
    981,347.45x = 747,173,929,148.93
  5. Step 5: Solve for x
    x = 747,173,929,148.93/981,347.45
  6. Step 6: Final answer
    x = 761,375.52

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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.