Home / 680,867.40-1,021,301.10-442,921.80

Finding the Fourth Proportional to 680,867.40, 1,021,301.10 and 442,921.80

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Solution

The fourth proportional to 680,867.40, 1,021,301.10 and 442,921.80 is: 664,382.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,867.40 : 1,021,301.10 = 442,921.80 : x
  2. Step 2: Convert to fraction form
    680,867.40/1,021,301.10 = 442,921.80/x
  3. Step 3: Cross multiply
    680,867.40x = 1,021,301.10 × 442,921.80
  4. Step 4: Simplify right side
    680,867.40x = 452,356,521,553.98
  5. Step 5: Solve for x
    x = 452,356,521,553.98/680,867.40
  6. Step 6: Final answer
    x = 664,382.70

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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.