Home / 804,987.60-1,207,481.40-431,739.60

Finding the Fourth Proportional to 804,987.60, 1,207,481.40 and 431,739.60

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Solution

The fourth proportional to 804,987.60, 1,207,481.40 and 431,739.60 is: 647,609.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,987.60 : 1,207,481.40 = 431,739.60 : x
  2. Step 2: Convert to fraction form
    804,987.60/1,207,481.40 = 431,739.60/x
  3. Step 3: Cross multiply
    804,987.60x = 1,207,481.40 × 431,739.60
  4. Step 4: Simplify right side
    804,987.60x = 521,317,536,643.44
  5. Step 5: Solve for x
    x = 521,317,536,643.44/804,987.60
  6. Step 6: Final answer
    x = 647,609.40

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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.