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Finding the Fourth Proportional to 719,454.23, 992,820.82 and 397,157.41

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Solution

The fourth proportional to 719,454.23, 992,820.82 and 397,157.41 is: 548,062.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,454.23 : 992,820.82 = 397,157.41 : x
  2. Step 2: Convert to fraction form
    719,454.23/992,820.82 = 397,157.41/x
  3. Step 3: Cross multiply
    719,454.23x = 992,820.82 × 397,157.41
  4. Step 4: Simplify right side
    719,454.23x = 394,306,141,990.33
  5. Step 5: Solve for x
    x = 394,306,141,990.33/719,454.23
  6. Step 6: Final answer
    x = 548,062.86

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1.5x scale

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.