Home / 681,305.40-1,021,958.10-443,359.80

Finding the Fourth Proportional to 681,305.40, 1,021,958.10 and 443,359.80

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Solution

The fourth proportional to 681,305.40, 1,021,958.10 and 443,359.80 is: 665,039.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,305.40 : 1,021,958.10 = 443,359.80 : x
  2. Step 2: Convert to fraction form
    681,305.40/1,021,958.10 = 443,359.80/x
  3. Step 3: Cross multiply
    681,305.40x = 1,021,958.10 × 443,359.80
  4. Step 4: Simplify right side
    681,305.40x = 453,095,138,824.38
  5. Step 5: Solve for x
    x = 453,095,138,824.38/681,305.40
  6. Step 6: Final answer
    x = 665,039.70

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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.