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Finding the Fourth Proportional to 723,902.89, 998,999.18 and 397,232.75

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Solution

The fourth proportional to 723,902.89, 998,999.18 and 397,232.75 is: 548,188.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,902.89 : 998,999.18 = 397,232.75 : x
  2. Step 2: Convert to fraction form
    723,902.89/998,999.18 = 397,232.75/x
  3. Step 3: Cross multiply
    723,902.89x = 998,999.18 × 397,232.75
  4. Step 4: Simplify right side
    723,902.89x = 396,835,184,537.99
  5. Step 5: Solve for x
    x = 396,835,184,537.99/723,902.89
  6. Step 6: Final answer
    x = 548,188.43

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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.