Home / 719,478.92-992,882.38-397,189.46

Finding the Fourth Proportional to 719,478.92, 992,882.38 and 397,189.46

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Solution

The fourth proportional to 719,478.92, 992,882.38 and 397,189.46 is: 548,122.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,478.92 : 992,882.38 = 397,189.46 : x
  2. Step 2: Convert to fraction form
    719,478.92/992,882.38 = 397,189.46/x
  3. Step 3: Cross multiply
    719,478.92x = 992,882.38 × 397,189.46
  4. Step 4: Simplify right side
    719,478.92x = 394,362,416,355.72
  5. Step 5: Solve for x
    x = 394,362,416,355.72/719,478.92
  6. Step 6: Final answer
    x = 548,122.27

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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.