Home / 712,191.72-982,824.80-389,922.29

Finding the Fourth Proportional to 712,191.72, 982,824.80 and 389,922.29

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Solution

The fourth proportional to 712,191.72, 982,824.80 and 389,922.29 is: 538,092.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,191.72 : 982,824.80 = 389,922.29 : x
  2. Step 2: Convert to fraction form
    712,191.72/982,824.80 = 389,922.29/x
  3. Step 3: Cross multiply
    712,191.72x = 982,824.80 × 389,922.29
  4. Step 4: Simplify right side
    712,191.72x = 383,225,289,821.06
  5. Step 5: Solve for x
    x = 383,225,289,821.06/712,191.72
  6. Step 6: Final answer
    x = 538,092.87

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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.