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Finding the Fourth Proportional to 675,099.80, 1,012,908.90 and 664,472.60

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Solution

The fourth proportional to 675,099.80, 1,012,908.90 and 664,472.60 is: 996,964.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,099.80 : 1,012,908.90 = 664,472.60 : x
  2. Step 2: Convert to fraction form
    675,099.80/1,012,908.90 = 664,472.60/x
  3. Step 3: Cross multiply
    675,099.80x = 1,012,908.90 × 664,472.60
  4. Step 4: Simplify right side
    675,099.80x = 673,050,210,346.14
  5. Step 5: Solve for x
    x = 673,050,210,346.14/675,099.80
  6. Step 6: Final answer
    x = 996,964.02

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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.