Home / 719,469.96-992,876.56-397,180.20

Finding the Fourth Proportional to 719,469.96, 992,876.56 and 397,180.20

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Solution

The fourth proportional to 719,469.96, 992,876.56 and 397,180.20 is: 548,113.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,469.96 : 992,876.56 = 397,180.20 : x
  2. Step 2: Convert to fraction form
    719,469.96/992,876.56 = 397,180.20/x
  3. Step 3: Cross multiply
    719,469.96x = 992,876.56 × 397,180.20
  4. Step 4: Simplify right side
    719,469.96x = 394,350,910,676.11
  5. Step 5: Solve for x
    x = 394,350,910,676.11/719,469.96
  6. Step 6: Final answer
    x = 548,113.10

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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.