Home / 885,959.20-1,328,938.80-324,920.80

Finding the Fourth Proportional to 885,959.20, 1,328,938.80 and 324,920.80

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Solution

The fourth proportional to 885,959.20, 1,328,938.80 and 324,920.80 is: 487,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,959.20 : 1,328,938.80 = 324,920.80 : x
  2. Step 2: Convert to fraction form
    885,959.20/1,328,938.80 = 324,920.80/x
  3. Step 3: Cross multiply
    885,959.20x = 1,328,938.80 × 324,920.80
  4. Step 4: Simplify right side
    885,959.20x = 431,799,858,047.04
  5. Step 5: Solve for x
    x = 431,799,858,047.04/885,959.20
  6. Step 6: Final answer
    x = 487,381.20

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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.