Home / 1,189,188.48-1,641,071.52-645,310.56

Finding the Fourth Proportional to 1,189,188.48, 1,641,071.52 and 645,310.56

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Solution

The fourth proportional to 1,189,188.48, 1,641,071.52 and 645,310.56 is: 890,523.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,188.48 : 1,641,071.52 = 645,310.56 : x
  2. Step 2: Convert to fraction form
    1,189,188.48/1,641,071.52 = 645,310.56/x
  3. Step 3: Cross multiply
    1,189,188.48x = 1,641,071.52 × 645,310.56
  4. Step 4: Simplify right side
    1,189,188.48x = 1,059,000,781,571.25
  5. Step 5: Solve for x
    x = 1,059,000,781,571.25/1,189,188.48
  6. Step 6: Final answer
    x = 890,523.92

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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.