Home / 885,819.20-1,328,728.80-324,780.80

Finding the Fourth Proportional to 885,819.20, 1,328,728.80 and 324,780.80

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Solution

The fourth proportional to 885,819.20, 1,328,728.80 and 324,780.80 is: 487,171.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,819.20 : 1,328,728.80 = 324,780.80 : x
  2. Step 2: Convert to fraction form
    885,819.20/1,328,728.80 = 324,780.80/x
  3. Step 3: Cross multiply
    885,819.20x = 1,328,728.80 × 324,780.80
  4. Step 4: Simplify right side
    885,819.20x = 431,545,602,647.04
  5. Step 5: Solve for x
    x = 431,545,602,647.04/885,819.20
  6. Step 6: Final answer
    x = 487,171.20

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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.