Home / 880,385.70-1,320,578.55-820,899.30

Finding the Fourth Proportional to 880,385.70, 1,320,578.55 and 820,899.30

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Solution

The fourth proportional to 880,385.70, 1,320,578.55 and 820,899.30 is: 1,231,348.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,385.70 : 1,320,578.55 = 820,899.30 : x
  2. Step 2: Convert to fraction form
    880,385.70/1,320,578.55 = 820,899.30/x
  3. Step 3: Cross multiply
    880,385.70x = 1,320,578.55 × 820,899.30
  4. Step 4: Simplify right side
    880,385.70x = 1,084,062,007,290.02
  5. Step 5: Solve for x
    x = 1,084,062,007,290.02/880,385.70
  6. Step 6: Final answer
    x = 1,231,348.95

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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.