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Finding the Fourth Proportional to 489,375.30, 734,062.96 and 453,945.90

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Solution

The fourth proportional to 489,375.30, 734,062.96 and 453,945.90 is: 680,918.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,375.30 : 734,062.96 = 453,945.90 : x
  2. Step 2: Convert to fraction form
    489,375.30/734,062.96 = 453,945.90/x
  3. Step 3: Cross multiply
    489,375.30x = 734,062.96 × 453,945.90
  4. Step 4: Simplify right side
    489,375.30x = 333,224,871,033.86
  5. Step 5: Solve for x
    x = 333,224,871,033.86/489,375.30
  6. Step 6: Final answer
    x = 680,918.86

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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.