Home / 712,288.11-982,957.43-389,998.13

Finding the Fourth Proportional to 712,288.11, 982,957.43 and 389,998.13

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Solution

The fourth proportional to 712,288.11, 982,957.43 and 389,998.13 is: 538,197.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,288.11 : 982,957.43 = 389,998.13 : x
  2. Step 2: Convert to fraction form
    712,288.11/982,957.43 = 389,998.13/x
  3. Step 3: Cross multiply
    712,288.11x = 982,957.43 × 389,998.13
  4. Step 4: Simplify right side
    712,288.11x = 383,351,552,704.83
  5. Step 5: Solve for x
    x = 383,351,552,704.83/712,288.11
  6. Step 6: Final answer
    x = 538,197.32

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Double scale
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Similar ratio
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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.