Home / 1,189,454.55-1,641,449.08-645,590.54

Finding the Fourth Proportional to 1,189,454.55, 1,641,449.08 and 645,590.54

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Solution

The fourth proportional to 1,189,454.55, 1,641,449.08 and 645,590.54 is: 890,915.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,454.55 : 1,641,449.08 = 645,590.54 : x
  2. Step 2: Convert to fraction form
    1,189,454.55/1,641,449.08 = 645,590.54/x
  3. Step 3: Cross multiply
    1,189,454.55x = 1,641,449.08 × 645,590.54
  4. Step 4: Simplify right side
    1,189,454.55x = 1,059,703,988,118.48
  5. Step 5: Solve for x
    x = 1,059,703,988,118.48/1,189,454.55
  6. Step 6: Final answer
    x = 890,915.91

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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.