Home / 885,718.80-1,328,578.20-324,680.40

Finding the Fourth Proportional to 885,718.80, 1,328,578.20 and 324,680.40

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Solution

The fourth proportional to 885,718.80, 1,328,578.20 and 324,680.40 is: 487,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,718.80 : 1,328,578.20 = 324,680.40 : x
  2. Step 2: Convert to fraction form
    885,718.80/1,328,578.20 = 324,680.40/x
  3. Step 3: Cross multiply
    885,718.80x = 1,328,578.20 × 324,680.40
  4. Step 4: Simplify right side
    885,718.80x = 431,363,301,407.28
  5. Step 5: Solve for x
    x = 431,363,301,407.28/885,718.80
  6. Step 6: Final answer
    x = 487,020.60

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Double scale
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Similar ratio
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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.