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Finding the Fourth Proportional to 855,626, 1,181,074.92 and 497,930

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Solution

The fourth proportional to 855,626, 1,181,074.92 and 497,930 is: 687,324.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,626 : 1,181,074.92 = 497,930 : x
  2. Step 2: Convert to fraction form
    855,626/1,181,074.92 = 497,930/x
  3. Step 3: Cross multiply
    855,626x = 1,181,074.92 × 497,930
  4. Step 4: Simplify right side
    855,626x = 588,092,634,915.60
  5. Step 5: Solve for x
    x = 588,092,634,915.60/855,626
  6. Step 6: Final answer
    x = 687,324.41

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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.