Home / 853,473.16-1,280,400.41-320,998.80

Finding the Fourth Proportional to 853,473.16, 1,280,400.41 and 320,998.80

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Solution

The fourth proportional to 853,473.16, 1,280,400.41 and 320,998.80 is: 481,569.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,473.16 : 1,280,400.41 = 320,998.80 : x
  2. Step 2: Convert to fraction form
    853,473.16/1,280,400.41 = 320,998.80/x
  3. Step 3: Cross multiply
    853,473.16x = 1,280,400.41 × 320,998.80
  4. Step 4: Simplify right side
    853,473.16x = 411,006,993,531.25
  5. Step 5: Solve for x
    x = 411,006,993,531.25/853,473.16
  6. Step 6: Final answer
    x = 481,569.91

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Double scale
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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.