Home / 861,836.20-1,293,344.78-300,870.68

Finding the Fourth Proportional to 861,836.20, 1,293,344.78 and 300,870.68

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Solution

The fourth proportional to 861,836.20, 1,293,344.78 and 300,870.68 is: 451,512.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,836.20 : 1,293,344.78 = 300,870.68 : x
  2. Step 2: Convert to fraction form
    861,836.20/1,293,344.78 = 300,870.68/x
  3. Step 3: Cross multiply
    861,836.20x = 1,293,344.78 × 300,870.68
  4. Step 4: Simplify right side
    861,836.20x = 389,129,523,433.05
  5. Step 5: Solve for x
    x = 389,129,523,433.05/861,836.20
  6. Step 6: Final answer
    x = 451,512.16

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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.