Home / 1,189,502.90-1,641,515.64-645,638.79

Finding the Fourth Proportional to 1,189,502.90, 1,641,515.64 and 645,638.79

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Solution

The fourth proportional to 1,189,502.90, 1,641,515.64 and 645,638.79 is: 890,982.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,502.90 : 1,641,515.64 = 645,638.79 : x
  2. Step 2: Convert to fraction form
    1,189,502.90/1,641,515.64 = 645,638.79/x
  3. Step 3: Cross multiply
    1,189,502.90x = 1,641,515.64 × 645,638.79
  4. Step 4: Simplify right side
    1,189,502.90x = 1,059,826,171,575.68
  5. Step 5: Solve for x
    x = 1,059,826,171,575.68/1,189,502.90
  6. Step 6: Final answer
    x = 890,982.42

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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.