Home / 1,187,180.15-1,781,151.53-388,279.98

Finding the Fourth Proportional to 1,187,180.15, 1,781,151.53 and 388,279.98

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Solution

The fourth proportional to 1,187,180.15, 1,781,151.53 and 388,279.98 is: 582,544.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,180.15 : 1,781,151.53 = 388,279.98 : x
  2. Step 2: Convert to fraction form
    1,187,180.15/1,781,151.53 = 388,279.98/x
  3. Step 3: Cross multiply
    1,187,180.15x = 1,781,151.53 × 388,279.98
  4. Step 4: Simplify right side
    1,187,180.15x = 691,585,478,503.97
  5. Step 5: Solve for x
    x = 691,585,478,503.97/1,187,180.15
  6. Step 6: Final answer
    x = 582,544.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.