Home / 723,905.41-998,989.08-397,220.56

Finding the Fourth Proportional to 723,905.41, 998,989.08 and 397,220.56

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Solution

The fourth proportional to 723,905.41, 998,989.08 and 397,220.56 is: 548,164.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,905.41 : 998,989.08 = 397,220.56 : x
  2. Step 2: Convert to fraction form
    723,905.41/998,989.08 = 397,220.56/x
  3. Step 3: Cross multiply
    723,905.41x = 998,989.08 × 397,220.56
  4. Step 4: Simplify right side
    723,905.41x = 396,819,001,791.49
  5. Step 5: Solve for x
    x = 396,819,001,791.49/723,905.41
  6. Step 6: Final answer
    x = 548,164.16

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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.