Home / 669,180.12-923,407.20-397,201.56

Finding the Fourth Proportional to 669,180.12, 923,407.20 and 397,201.56

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Solution

The fourth proportional to 669,180.12, 923,407.20 and 397,201.56 is: 548,101.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,180.12 : 923,407.20 = 397,201.56 : x
  2. Step 2: Convert to fraction form
    669,180.12/923,407.20 = 397,201.56/x
  3. Step 3: Cross multiply
    669,180.12x = 923,407.20 × 397,201.56
  4. Step 4: Simplify right side
    669,180.12x = 366,778,780,355.23
  5. Step 5: Solve for x
    x = 366,778,780,355.23/669,180.12
  6. Step 6: Final answer
    x = 548,101.73

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Double scale
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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.