Home / 719,410.78-992,787.52-397,120.56

Finding the Fourth Proportional to 719,410.78, 992,787.52 and 397,120.56

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Solution

The fourth proportional to 719,410.78, 992,787.52 and 397,120.56 is: 548,026.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,410.78 : 992,787.52 = 397,120.56 : x
  2. Step 2: Convert to fraction form
    719,410.78/992,787.52 = 397,120.56/x
  3. Step 3: Cross multiply
    719,410.78x = 992,787.52 × 397,120.56
  4. Step 4: Simplify right side
    719,410.78x = 394,256,335,903.41
  5. Step 5: Solve for x
    x = 394,256,335,903.41/719,410.78
  6. Step 6: Final answer
    x = 548,026.73

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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.