Home / 820,871.20-1,229,233.20-538,861.60

Finding the Fourth Proportional to 820,871.20, 1,229,233.20 and 538,861.60

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Solution

The fourth proportional to 820,871.20, 1,229,233.20 and 538,861.60 is: 806,931.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,871.20 : 1,229,233.20 = 538,861.60 : x
  2. Step 2: Convert to fraction form
    820,871.20/1,229,233.20 = 538,861.60/x
  3. Step 3: Cross multiply
    820,871.20x = 1,229,233.20 × 538,861.60
  4. Step 4: Simplify right side
    820,871.20x = 662,386,568,925.12
  5. Step 5: Solve for x
    x = 662,386,568,925.12/820,871.20
  6. Step 6: Final answer
    x = 806,931.18

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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.