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Finding the Fourth Proportional to 823,615.60, 1,236,114.60 and 403,250.80

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Solution

The fourth proportional to 823,615.60, 1,236,114.60 and 403,250.80 is: 605,214.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,615.60 : 1,236,114.60 = 403,250.80 : x
  2. Step 2: Convert to fraction form
    823,615.60/1,236,114.60 = 403,250.80/x
  3. Step 3: Cross multiply
    823,615.60x = 1,236,114.60 × 403,250.80
  4. Step 4: Simplify right side
    823,615.60x = 498,464,201,341.68
  5. Step 5: Solve for x
    x = 498,464,201,341.68/823,615.60
  6. Step 6: Final answer
    x = 605,214.62

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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.