Home / 820,934.70-1,231,402.05-521,753.10

Finding the Fourth Proportional to 820,934.70, 1,231,402.05 and 521,753.10

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Solution

The fourth proportional to 820,934.70, 1,231,402.05 and 521,753.10 is: 782,629.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,934.70 : 1,231,402.05 = 521,753.10 : x
  2. Step 2: Convert to fraction form
    820,934.70/1,231,402.05 = 521,753.10/x
  3. Step 3: Cross multiply
    820,934.70x = 1,231,402.05 × 521,753.10
  4. Step 4: Simplify right side
    820,934.70x = 642,487,836,933.86
  5. Step 5: Solve for x
    x = 642,487,836,933.86/820,934.70
  6. Step 6: Final answer
    x = 782,629.65

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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.