Home / 661,422.96-913,214.46-443,957.78

Finding the Fourth Proportional to 661,422.96, 913,214.46 and 443,957.78

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Solution

The fourth proportional to 661,422.96, 913,214.46 and 443,957.78 is: 612,964.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,422.96 : 913,214.46 = 443,957.78 : x
  2. Step 2: Convert to fraction form
    661,422.96/913,214.46 = 443,957.78/x
  3. Step 3: Cross multiply
    661,422.96x = 913,214.46 × 443,957.78
  4. Step 4: Simplify right side
    661,422.96x = 405,428,664,325.50
  5. Step 5: Solve for x
    x = 405,428,664,325.50/661,422.96
  6. Step 6: Final answer
    x = 612,964.30

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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.