Home / 779,105.76-1,169,321.76-306,121.92

Finding the Fourth Proportional to 779,105.76, 1,169,321.76 and 306,121.92

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Solution

The fourth proportional to 779,105.76, 1,169,321.76 and 306,121.92 is: 459,443.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,105.76 : 1,169,321.76 = 306,121.92 : x
  2. Step 2: Convert to fraction form
    779,105.76/1,169,321.76 = 306,121.92/x
  3. Step 3: Cross multiply
    779,105.76x = 1,169,321.76 × 306,121.92
  4. Step 4: Simplify right side
    779,105.76x = 357,955,022,268.98
  5. Step 5: Solve for x
    x = 357,955,022,268.98/779,105.76
  6. Step 6: Final answer
    x = 459,443.43

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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.