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Finding the Fourth Proportional to 879,519, 1,213,833.42 and 497,542.44

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Solution

The fourth proportional to 879,519, 1,213,833.42 and 497,542.44 is: 686,663.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,519 : 1,213,833.42 = 497,542.44 : x
  2. Step 2: Convert to fraction form
    879,519/1,213,833.42 = 497,542.44/x
  3. Step 3: Cross multiply
    879,519x = 1,213,833.42 × 497,542.44
  4. Step 4: Simplify right side
    879,519x = 603,933,641,540.35
  5. Step 5: Solve for x
    x = 603,933,641,540.35/879,519
  6. Step 6: Final answer
    x = 686,663.55

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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.