Home / 1,287,381.76-1,930,319.76-388,553.92

Finding the Fourth Proportional to 1,287,381.76, 1,930,319.76 and 388,553.92

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Solution

The fourth proportional to 1,287,381.76, 1,930,319.76 and 388,553.92 is: 582,603.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,381.76 : 1,930,319.76 = 388,553.92 : x
  2. Step 2: Convert to fraction form
    1,287,381.76/1,930,319.76 = 388,553.92/x
  3. Step 3: Cross multiply
    1,287,381.76x = 1,930,319.76 × 388,553.92
  4. Step 4: Simplify right side
    1,287,381.76x = 750,033,309,601.46
  5. Step 5: Solve for x
    x = 750,033,309,601.46/1,287,381.76
  6. Step 6: Final answer
    x = 582,603.65

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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.