Home / 463,433.12-639,426.96-282,142.88

Finding the Fourth Proportional to 463,433.12, 639,426.96 and 282,142.88

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Solution

The fourth proportional to 463,433.12, 639,426.96 and 282,142.88 is: 389,289.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,433.12 : 639,426.96 = 282,142.88 : x
  2. Step 2: Convert to fraction form
    463,433.12/639,426.96 = 282,142.88/x
  3. Step 3: Cross multiply
    463,433.12x = 639,426.96 × 282,142.88
  4. Step 4: Simplify right side
    463,433.12x = 180,409,764,044.05
  5. Step 5: Solve for x
    x = 180,409,764,044.05/463,433.12
  6. Step 6: Final answer
    x = 389,289.75

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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.