Home / 804,961.60-1,207,442.40-431,713.60

Finding the Fourth Proportional to 804,961.60, 1,207,442.40 and 431,713.60

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Solution

The fourth proportional to 804,961.60, 1,207,442.40 and 431,713.60 is: 647,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,961.60 : 1,207,442.40 = 431,713.60 : x
  2. Step 2: Convert to fraction form
    804,961.60/1,207,442.40 = 431,713.60/x
  3. Step 3: Cross multiply
    804,961.60x = 1,207,442.40 × 431,713.60
  4. Step 4: Simplify right side
    804,961.60x = 521,269,305,296.64
  5. Step 5: Solve for x
    x = 521,269,305,296.64/804,961.60
  6. Step 6: Final answer
    x = 647,570.40

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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.