Home / 719,415.12-992,787.38-397,125.46

Finding the Fourth Proportional to 719,415.12, 992,787.38 and 397,125.46

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Solution

The fourth proportional to 719,415.12, 992,787.38 and 397,125.46 is: 548,030.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,415.12 : 992,787.38 = 397,125.46 : x
  2. Step 2: Convert to fraction form
    719,415.12/992,787.38 = 397,125.46/x
  3. Step 3: Cross multiply
    719,415.12x = 992,787.38 × 397,125.46
  4. Step 4: Simplify right side
    719,415.12x = 394,261,144,964.70
  5. Step 5: Solve for x
    x = 394,261,144,964.70/719,415.12
  6. Step 6: Final answer
    x = 548,030.11

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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.