Home / 712,229.08-982,887.78-389,933.80

Finding the Fourth Proportional to 712,229.08, 982,887.78 and 389,933.80

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Solution

The fourth proportional to 712,229.08, 982,887.78 and 389,933.80 is: 538,115.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,229.08 : 982,887.78 = 389,933.80 : x
  2. Step 2: Convert to fraction form
    712,229.08/982,887.78 = 389,933.80/x
  3. Step 3: Cross multiply
    712,229.08x = 982,887.78 × 389,933.80
  4. Step 4: Simplify right side
    712,229.08x = 383,261,167,028.96
  5. Step 5: Solve for x
    x = 383,261,167,028.96/712,229.08
  6. Step 6: Final answer
    x = 538,115.02

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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.