Home / 869,147.69-1,199,479.19-487,174.50

Finding the Fourth Proportional to 869,147.69, 1,199,479.19 and 487,174.50

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Solution

The fourth proportional to 869,147.69, 1,199,479.19 and 487,174.50 is: 672,331.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,147.69 : 1,199,479.19 = 487,174.50 : x
  2. Step 2: Convert to fraction form
    869,147.69/1,199,479.19 = 487,174.50/x
  3. Step 3: Cross multiply
    869,147.69x = 1,199,479.19 × 487,174.50
  4. Step 4: Simplify right side
    869,147.69x = 584,355,672,212.78
  5. Step 5: Solve for x
    x = 584,355,672,212.78/869,147.69
  6. Step 6: Final answer
    x = 672,331.85

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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.