Home / 718,052.28-990,969.12-395,819.70

Finding the Fourth Proportional to 718,052.28, 990,969.12 and 395,819.70

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Solution

The fourth proportional to 718,052.28, 990,969.12 and 395,819.70 is: 546,262.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,052.28 : 990,969.12 = 395,819.70 : x
  2. Step 2: Convert to fraction form
    718,052.28/990,969.12 = 395,819.70/x
  3. Step 3: Cross multiply
    718,052.28x = 990,969.12 × 395,819.70
  4. Step 4: Simplify right side
    718,052.28x = 392,245,099,787.66
  5. Step 5: Solve for x
    x = 392,245,099,787.66/718,052.28
  6. Step 6: Final answer
    x = 546,262.59

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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.