Home / 766,022.40-1,057,297.20-443,680.56

Finding the Fourth Proportional to 766,022.40, 1,057,297.20 and 443,680.56

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Solution

The fourth proportional to 766,022.40, 1,057,297.20 and 443,680.56 is: 612,387.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,022.40 : 1,057,297.20 = 443,680.56 : x
  2. Step 2: Convert to fraction form
    766,022.40/1,057,297.20 = 443,680.56/x
  3. Step 3: Cross multiply
    766,022.40x = 1,057,297.20 × 443,680.56
  4. Step 4: Simplify right side
    766,022.40x = 469,102,213,782.43
  5. Step 5: Solve for x
    x = 469,102,213,782.43/766,022.40
  6. Step 6: Final answer
    x = 612,387.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.