Home / 818,206.28-1,227,502.60-257,240.78

Finding the Fourth Proportional to 818,206.28, 1,227,502.60 and 257,240.78

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Solution

The fourth proportional to 818,206.28, 1,227,502.60 and 257,240.78 is: 385,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,206.28 : 1,227,502.60 = 257,240.78 : x
  2. Step 2: Convert to fraction form
    818,206.28/1,227,502.60 = 257,240.78/x
  3. Step 3: Cross multiply
    818,206.28x = 1,227,502.60 × 257,240.78
  4. Step 4: Simplify right side
    818,206.28x = 315,763,724,098.55
  5. Step 5: Solve for x
    x = 315,763,724,098.55/818,206.28
  6. Step 6: Final answer
    x = 385,921.90

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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.