Home / 1,148,010.28-1,721,945.76-428,213.24

Finding the Fourth Proportional to 1,148,010.28, 1,721,945.76 and 428,213.24

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Solution

The fourth proportional to 1,148,010.28, 1,721,945.76 and 428,213.24 is: 642,293.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148,010.28 : 1,721,945.76 = 428,213.24 : x
  2. Step 2: Convert to fraction form
    1,148,010.28/1,721,945.76 = 428,213.24/x
  3. Step 3: Cross multiply
    1,148,010.28x = 1,721,945.76 × 428,213.24
  4. Step 4: Simplify right side
    1,148,010.28x = 737,359,972,993.86
  5. Step 5: Solve for x
    x = 737,359,972,993.86/1,148,010.28
  6. Step 6: Final answer
    x = 642,293.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.