Home / 1,189,408.31-1,641,385.10-645,544.11

Finding the Fourth Proportional to 1,189,408.31, 1,641,385.10 and 645,544.11

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Solution

The fourth proportional to 1,189,408.31, 1,641,385.10 and 645,544.11 is: 890,851.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,408.31 : 1,641,385.10 = 645,544.11 : x
  2. Step 2: Convert to fraction form
    1,189,408.31/1,641,385.10 = 645,544.11/x
  3. Step 3: Cross multiply
    1,189,408.31x = 1,641,385.10 × 645,544.11
  4. Step 4: Simplify right side
    1,189,408.31x = 1,059,586,485,160.62
  5. Step 5: Solve for x
    x = 1,059,586,485,160.62/1,189,408.31
  6. Step 6: Final answer
    x = 890,851.76

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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.