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Finding the Fourth Proportional to 855,630, 1,181,080.44 and 497,934

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Solution

The fourth proportional to 855,630, 1,181,080.44 and 497,934 is: 687,329.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,630 : 1,181,080.44 = 497,934 : x
  2. Step 2: Convert to fraction form
    855,630/1,181,080.44 = 497,934/x
  3. Step 3: Cross multiply
    855,630x = 1,181,080.44 × 497,934
  4. Step 4: Simplify right side
    855,630x = 588,100,107,810.96
  5. Step 5: Solve for x
    x = 588,100,107,810.96/855,630
  6. Step 6: Final answer
    x = 687,329.93

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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.