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Finding the Fourth Proportional to 615,680.20, 922,742.70 and 299,456.20

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Solution

The fourth proportional to 615,680.20, 922,742.70 and 299,456.20 is: 448,806.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,680.20 : 922,742.70 = 299,456.20 : x
  2. Step 2: Convert to fraction form
    615,680.20/922,742.70 = 299,456.20/x
  3. Step 3: Cross multiply
    615,680.20x = 922,742.70 × 299,456.20
  4. Step 4: Simplify right side
    615,680.20x = 276,321,022,519.74
  5. Step 5: Solve for x
    x = 276,321,022,519.74/615,680.20
  6. Step 6: Final answer
    x = 448,806.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.