Home / 712,008.67-982,581.19-389,711.85

Finding the Fourth Proportional to 712,008.67, 982,581.19 and 389,711.85

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Solution

The fourth proportional to 712,008.67, 982,581.19 and 389,711.85 is: 537,807.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,008.67 : 982,581.19 = 389,711.85 : x
  2. Step 2: Convert to fraction form
    712,008.67/982,581.19 = 389,711.85/x
  3. Step 3: Cross multiply
    712,008.67x = 982,581.19 × 389,711.85
  4. Step 4: Simplify right side
    712,008.67x = 382,923,533,330.10
  5. Step 5: Solve for x
    x = 382,923,533,330.10/712,008.67
  6. Step 6: Final answer
    x = 537,807.40

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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.