Home / 869,337.38-1,199,743.17-487,388.90

Finding the Fourth Proportional to 869,337.38, 1,199,743.17 and 487,388.90

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Solution

The fourth proportional to 869,337.38, 1,199,743.17 and 487,388.90 is: 672,628.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,337.38 : 1,199,743.17 = 487,388.90 : x
  2. Step 2: Convert to fraction form
    869,337.38/1,199,743.17 = 487,388.90/x
  3. Step 3: Cross multiply
    869,337.38x = 1,199,743.17 × 487,388.90
  4. Step 4: Simplify right side
    869,337.38x = 584,741,503,908.81
  5. Step 5: Solve for x
    x = 584,741,503,908.81/869,337.38
  6. Step 6: Final answer
    x = 672,628.97

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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.