Home / 672,928.80-1,008,032.40-419,431.20

Finding the Fourth Proportional to 672,928.80, 1,008,032.40 and 419,431.20

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Solution

The fourth proportional to 672,928.80, 1,008,032.40 and 419,431.20 is: 628,298.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,928.80 : 1,008,032.40 = 419,431.20 : x
  2. Step 2: Convert to fraction form
    672,928.80/1,008,032.40 = 419,431.20/x
  3. Step 3: Cross multiply
    672,928.80x = 1,008,032.40 × 419,431.20
  4. Step 4: Simplify right side
    672,928.80x = 422,800,239,170.88
  5. Step 5: Solve for x
    x = 422,800,239,170.88/672,928.80
  6. Step 6: Final answer
    x = 628,298.62

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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.