Home / 698,456.20-1,047,684.30-657,121.90

Finding the Fourth Proportional to 698,456.20, 1,047,684.30 and 657,121.90

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Solution

The fourth proportional to 698,456.20, 1,047,684.30 and 657,121.90 is: 985,682.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,456.20 : 1,047,684.30 = 657,121.90 : x
  2. Step 2: Convert to fraction form
    698,456.20/1,047,684.30 = 657,121.90/x
  3. Step 3: Cross multiply
    698,456.20x = 1,047,684.30 × 657,121.90
  4. Step 4: Simplify right side
    698,456.20x = 688,456,297,816.17
  5. Step 5: Solve for x
    x = 688,456,297,816.17/698,456.20
  6. Step 6: Final answer
    x = 985,682.85

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.