Home / 672,305.40-1,008,458.10-667,639.80

Finding the Fourth Proportional to 672,305.40, 1,008,458.10 and 667,639.80

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Solution

The fourth proportional to 672,305.40, 1,008,458.10 and 667,639.80 is: 1,001,459.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,305.40 : 1,008,458.10 = 667,639.80 : x
  2. Step 2: Convert to fraction form
    672,305.40/1,008,458.10 = 667,639.80/x
  3. Step 3: Cross multiply
    672,305.40x = 1,008,458.10 × 667,639.80
  4. Step 4: Simplify right side
    672,305.40x = 673,286,764,192.38
  5. Step 5: Solve for x
    x = 673,286,764,192.38/672,305.40
  6. Step 6: Final answer
    x = 1,001,459.70

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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.