Home / 1,189,504.12-1,641,517.34-645,640.02

Finding the Fourth Proportional to 1,189,504.12, 1,641,517.34 and 645,640.02

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Solution

The fourth proportional to 1,189,504.12, 1,641,517.34 and 645,640.02 is: 890,984.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,504.12 : 1,641,517.34 = 645,640.02 : x
  2. Step 2: Convert to fraction form
    1,189,504.12/1,641,517.34 = 645,640.02/x
  3. Step 3: Cross multiply
    1,189,504.12x = 1,641,517.34 × 645,640.02
  4. Step 4: Simplify right side
    1,189,504.12x = 1,059,829,288,227.95
  5. Step 5: Solve for x
    x = 1,059,829,288,227.95/1,189,504.12
  6. Step 6: Final answer
    x = 890,984.13

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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.