Home / 820,905.60-1,231,488-347,593.92

Finding the Fourth Proportional to 820,905.60, 1,231,488 and 347,593.92

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Solution

The fourth proportional to 820,905.60, 1,231,488 and 347,593.92 is: 521,445.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,905.60 : 1,231,488 = 347,593.92 : x
  2. Step 2: Convert to fraction form
    820,905.60/1,231,488 = 347,593.92/x
  3. Step 3: Cross multiply
    820,905.60x = 1,231,488 × 347,593.92
  4. Step 4: Simplify right side
    820,905.60x = 428,057,741,352.96
  5. Step 5: Solve for x
    x = 428,057,741,352.96/820,905.60
  6. Step 6: Final answer
    x = 521,445.76

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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.