Home / 869,147.92-1,199,479.56-487,174.78

Finding the Fourth Proportional to 869,147.92, 1,199,479.56 and 487,174.78

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Solution

The fourth proportional to 869,147.92, 1,199,479.56 and 487,174.78 is: 672,332.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,147.92 : 1,199,479.56 = 487,174.78 : x
  2. Step 2: Convert to fraction form
    869,147.92/1,199,479.56 = 487,174.78/x
  3. Step 3: Cross multiply
    869,147.92x = 1,199,479.56 × 487,174.78
  4. Step 4: Simplify right side
    869,147.92x = 584,356,190,757.50
  5. Step 5: Solve for x
    x = 584,356,190,757.50/869,147.92
  6. Step 6: Final answer
    x = 672,332.27

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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.