Home / 783,422.06-1,080,724.51-511,649.04

Finding the Fourth Proportional to 783,422.06, 1,080,724.51 and 511,649.04

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Solution

The fourth proportional to 783,422.06, 1,080,724.51 and 511,649.04 is: 705,815.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,422.06 : 1,080,724.51 = 511,649.04 : x
  2. Step 2: Convert to fraction form
    783,422.06/1,080,724.51 = 511,649.04/x
  3. Step 3: Cross multiply
    783,422.06x = 1,080,724.51 × 511,649.04
  4. Step 4: Simplify right side
    783,422.06x = 552,951,655,487.73
  5. Step 5: Solve for x
    x = 552,951,655,487.73/783,422.06
  6. Step 6: Final answer
    x = 705,815.78

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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.