Home / 712,191.22-982,824.11-389,921.79

Finding the Fourth Proportional to 712,191.22, 982,824.11 and 389,921.79

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Solution

The fourth proportional to 712,191.22, 982,824.11 and 389,921.79 is: 538,092.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,191.22 : 982,824.11 = 389,921.79 : x
  2. Step 2: Convert to fraction form
    712,191.22/982,824.11 = 389,921.79/x
  3. Step 3: Cross multiply
    712,191.22x = 982,824.11 × 389,921.79
  4. Step 4: Simplify right side
    712,191.22x = 383,224,536,226.36
  5. Step 5: Solve for x
    x = 383,224,536,226.36/712,191.22
  6. Step 6: Final answer
    x = 538,092.19

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Double scale
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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.