Home / 672,932.80-1,008,038.40-419,435.20

Finding the Fourth Proportional to 672,932.80, 1,008,038.40 and 419,435.20

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Solution

The fourth proportional to 672,932.80, 1,008,038.40 and 419,435.20 is: 628,304.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,932.80 : 1,008,038.40 = 419,435.20 : x
  2. Step 2: Convert to fraction form
    672,932.80/1,008,038.40 = 419,435.20/x
  3. Step 3: Cross multiply
    672,932.80x = 1,008,038.40 × 419,435.20
  4. Step 4: Simplify right side
    672,932.80x = 422,806,787,911.68
  5. Step 5: Solve for x
    x = 422,806,787,911.68/672,932.80
  6. Step 6: Final answer
    x = 628,304.62

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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.