Home / 1,189,517.60-1,641,490.11-645,641.69

Finding the Fourth Proportional to 1,189,517.60, 1,641,490.11 and 645,641.69

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Solution

The fourth proportional to 1,189,517.60, 1,641,490.11 and 645,641.69 is: 890,961.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,517.60 : 1,641,490.11 = 645,641.69 : x
  2. Step 2: Convert to fraction form
    1,189,517.60/1,641,490.11 = 645,641.69/x
  3. Step 3: Cross multiply
    1,189,517.60x = 1,641,490.11 × 645,641.69
  4. Step 4: Simplify right side
    1,189,517.60x = 1,059,814,440,531.24
  5. Step 5: Solve for x
    x = 1,059,814,440,531.24/1,189,517.60
  6. Step 6: Final answer
    x = 890,961.55

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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.