Home / 781,669.31-1,077,847.02-509,231.97

Finding the Fourth Proportional to 781,669.31, 1,077,847.02 and 509,231.97

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Solution

The fourth proportional to 781,669.31, 1,077,847.02 and 509,231.97 is: 702,182.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,669.31 : 1,077,847.02 = 509,231.97 : x
  2. Step 2: Convert to fraction form
    781,669.31/1,077,847.02 = 509,231.97/x
  3. Step 3: Cross multiply
    781,669.31x = 1,077,847.02 × 509,231.97
  4. Step 4: Simplify right side
    781,669.31x = 548,874,161,353.23
  5. Step 5: Solve for x
    x = 548,874,161,353.23/781,669.31
  6. Step 6: Final answer
    x = 702,182.06

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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.