Home / 869,190.57-1,199,479.22-487,217.36

Finding the Fourth Proportional to 869,190.57, 1,199,479.22 and 487,217.36

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Solution

The fourth proportional to 869,190.57, 1,199,479.22 and 487,217.36 is: 672,357.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,190.57 : 1,199,479.22 = 487,217.36 : x
  2. Step 2: Convert to fraction form
    869,190.57/1,199,479.22 = 487,217.36/x
  3. Step 3: Cross multiply
    869,190.57x = 1,199,479.22 × 487,217.36
  4. Step 4: Simplify right side
    869,190.57x = 584,407,101,332.94
  5. Step 5: Solve for x
    x = 584,407,101,332.94/869,190.57
  6. Step 6: Final answer
    x = 672,357.85

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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.