Home / 869,149.92-1,199,482.32-487,176.78

Finding the Fourth Proportional to 869,149.92, 1,199,482.32 and 487,176.78

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Solution

The fourth proportional to 869,149.92, 1,199,482.32 and 487,176.78 is: 672,335.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,149.92 : 1,199,482.32 = 487,176.78 : x
  2. Step 2: Convert to fraction form
    869,149.92/1,199,482.32 = 487,176.78/x
  3. Step 3: Cross multiply
    869,149.92x = 1,199,482.32 × 487,176.78
  4. Step 4: Simplify right side
    869,149.92x = 584,359,934,324.53
  5. Step 5: Solve for x
    x = 584,359,934,324.53/869,149.92
  6. Step 6: Final answer
    x = 672,335.03

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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.