Home / 782,641.80-1,173,306.60-408,664.80

Finding the Fourth Proportional to 782,641.80, 1,173,306.60 and 408,664.80

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Solution

The fourth proportional to 782,641.80, 1,173,306.60 and 408,664.80 is: 612,654.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,641.80 : 1,173,306.60 = 408,664.80 : x
  2. Step 2: Convert to fraction form
    782,641.80/1,173,306.60 = 408,664.80/x
  3. Step 3: Cross multiply
    782,641.80x = 1,173,306.60 × 408,664.80
  4. Step 4: Simplify right side
    782,641.80x = 479,489,107,027.68
  5. Step 5: Solve for x
    x = 479,489,107,027.68/782,641.80
  6. Step 6: Final answer
    x = 612,654.61

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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.