Home / 820,917.60-1,231,506-347,605.92

Finding the Fourth Proportional to 820,917.60, 1,231,506 and 347,605.92

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Solution

The fourth proportional to 820,917.60, 1,231,506 and 347,605.92 is: 521,463.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,917.60 : 1,231,506 = 347,605.92 : x
  2. Step 2: Convert to fraction form
    820,917.60/1,231,506 = 347,605.92/x
  3. Step 3: Cross multiply
    820,917.60x = 1,231,506 × 347,605.92
  4. Step 4: Simplify right side
    820,917.60x = 428,078,776,115.52
  5. Step 5: Solve for x
    x = 428,078,776,115.52/820,917.60
  6. Step 6: Final answer
    x = 521,463.76

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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.