Home / 1,189,236.45-1,641,147.38-645,372.28

Finding the Fourth Proportional to 1,189,236.45, 1,641,147.38 and 645,372.28

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Solution

The fourth proportional to 1,189,236.45, 1,641,147.38 and 645,372.28 is: 890,614.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,236.45 : 1,641,147.38 = 645,372.28 : x
  2. Step 2: Convert to fraction form
    1,189,236.45/1,641,147.38 = 645,372.28/x
  3. Step 3: Cross multiply
    1,189,236.45x = 1,641,147.38 × 645,372.28
  4. Step 4: Simplify right side
    1,189,236.45x = 1,059,151,026,446.63
  5. Step 5: Solve for x
    x = 1,059,151,026,446.63/1,189,236.45
  6. Step 6: Final answer
    x = 890,614.33

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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.