Home / 781,858.80-1,079,080.92-495,405.54

Finding the Fourth Proportional to 781,858.80, 1,079,080.92 and 495,405.54

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Solution

The fourth proportional to 781,858.80, 1,079,080.92 and 495,405.54 is: 683,733.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,858.80 : 1,079,080.92 = 495,405.54 : x
  2. Step 2: Convert to fraction form
    781,858.80/1,079,080.92 = 495,405.54/x
  3. Step 3: Cross multiply
    781,858.80x = 1,079,080.92 × 495,405.54
  4. Step 4: Simplify right side
    781,858.80x = 534,582,665,876.30
  5. Step 5: Solve for x
    x = 534,582,665,876.30/781,858.80
  6. Step 6: Final answer
    x = 683,733.00

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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.