Home / 813,732.60-1,220,793.30-392,662.20

Finding the Fourth Proportional to 813,732.60, 1,220,793.30 and 392,662.20

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Solution

The fourth proportional to 813,732.60, 1,220,793.30 and 392,662.20 is: 589,087.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,732.60 : 1,220,793.30 = 392,662.20 : x
  2. Step 2: Convert to fraction form
    813,732.60/1,220,793.30 = 392,662.20/x
  3. Step 3: Cross multiply
    813,732.60x = 1,220,793.30 × 392,662.20
  4. Step 4: Simplify right side
    813,732.60x = 479,359,382,923.26
  5. Step 5: Solve for x
    x = 479,359,382,923.26/813,732.60
  6. Step 6: Final answer
    x = 589,087.11

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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.