Home / 712,190.97-982,823.76-389,921.54

Finding the Fourth Proportional to 712,190.97, 982,823.76 and 389,921.54

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Solution

The fourth proportional to 712,190.97, 982,823.76 and 389,921.54 is: 538,091.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,190.97 : 982,823.76 = 389,921.54 : x
  2. Step 2: Convert to fraction form
    712,190.97/982,823.76 = 389,921.54/x
  3. Step 3: Cross multiply
    712,190.97x = 982,823.76 × 389,921.54
  4. Step 4: Simplify right side
    712,190.97x = 383,224,149,133.67
  5. Step 5: Solve for x
    x = 383,224,149,133.67/712,190.97
  6. Step 6: Final answer
    x = 538,091.84

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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.