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Finding the Fourth Proportional to 719,003.75, 992,245.91 and 396,734.58

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Solution

The fourth proportional to 719,003.75, 992,245.91 and 396,734.58 is: 547,505.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,003.75 : 992,245.91 = 396,734.58 : x
  2. Step 2: Convert to fraction form
    719,003.75/992,245.91 = 396,734.58/x
  3. Step 3: Cross multiply
    719,003.75x = 992,245.91 × 396,734.58
  4. Step 4: Simplify right side
    719,003.75x = 393,658,262,376.90
  5. Step 5: Solve for x
    x = 393,658,262,376.90/719,003.75
  6. Step 6: Final answer
    x = 547,505.16

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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.