Home / 820,123.40-1,231,106.70-633,960.20

Finding the Fourth Proportional to 820,123.40, 1,231,106.70 and 633,960.20

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Solution

The fourth proportional to 820,123.40, 1,231,106.70 and 633,960.20 is: 951,652.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,123.40 : 1,231,106.70 = 633,960.20 : x
  2. Step 2: Convert to fraction form
    820,123.40/1,231,106.70 = 633,960.20/x
  3. Step 3: Cross multiply
    820,123.40x = 1,231,106.70 × 633,960.20
  4. Step 4: Simplify right side
    820,123.40x = 780,472,649,753.34
  5. Step 5: Solve for x
    x = 780,472,649,753.34/820,123.40
  6. Step 6: Final answer
    x = 951,652.70

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1.5x scale

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.