Home / 672,938.30-1,008,046.65-419,440.70

Finding the Fourth Proportional to 672,938.30, 1,008,046.65 and 419,440.70

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Solution

The fourth proportional to 672,938.30, 1,008,046.65 and 419,440.70 is: 628,312.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,938.30 : 1,008,046.65 = 419,440.70 : x
  2. Step 2: Convert to fraction form
    672,938.30/1,008,046.65 = 419,440.70/x
  3. Step 3: Cross multiply
    672,938.30x = 1,008,046.65 × 419,440.70
  4. Step 4: Simplify right side
    672,938.30x = 422,815,792,508.66
  5. Step 5: Solve for x
    x = 422,815,792,508.66/672,938.30
  6. Step 6: Final answer
    x = 628,312.87

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1.5x scale

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.