Home / 820,141.20-1,230,211.80-654,253.20

Finding the Fourth Proportional to 820,141.20, 1,230,211.80 and 654,253.20

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Solution

The fourth proportional to 820,141.20, 1,230,211.80 and 654,253.20 is: 981,379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,141.20 : 1,230,211.80 = 654,253.20 : x
  2. Step 2: Convert to fraction form
    820,141.20/1,230,211.80 = 654,253.20/x
  3. Step 3: Cross multiply
    820,141.20x = 1,230,211.80 × 654,253.20
  4. Step 4: Simplify right side
    820,141.20x = 804,870,006,827.76
  5. Step 5: Solve for x
    x = 804,870,006,827.76/820,141.20
  6. Step 6: Final answer
    x = 981,379.80

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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.