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Finding the Fourth Proportional to 722,040.56, 996,677.70 and 420,234.56

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Solution

The fourth proportional to 722,040.56, 996,677.70 and 420,234.56 is: 580,076.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,040.56 : 996,677.70 = 420,234.56 : x
  2. Step 2: Convert to fraction form
    722,040.56/996,677.70 = 420,234.56/x
  3. Step 3: Cross multiply
    722,040.56x = 996,677.70 × 420,234.56
  4. Step 4: Simplify right side
    722,040.56x = 418,838,414,721.31
  5. Step 5: Solve for x
    x = 418,838,414,721.31/722,040.56
  6. Step 6: Final answer
    x = 580,076.02

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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.