Home / 689,117.10-1,033,789.05-215,688.30

Finding the Fourth Proportional to 689,117.10, 1,033,789.05 and 215,688.30

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Solution

The fourth proportional to 689,117.10, 1,033,789.05 and 215,688.30 is: 323,567.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,117.10 : 1,033,789.05 = 215,688.30 : x
  2. Step 2: Convert to fraction form
    689,117.10/1,033,789.05 = 215,688.30/x
  3. Step 3: Cross multiply
    689,117.10x = 1,033,789.05 × 215,688.30
  4. Step 4: Simplify right side
    689,117.10x = 222,976,202,753.12
  5. Step 5: Solve for x
    x = 222,976,202,753.12/689,117.10
  6. Step 6: Final answer
    x = 323,567.94

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Double scale
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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.