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Finding the Fourth Proportional to 823,679.60, 1,236,210.60 and 403,314.80

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Solution

The fourth proportional to 823,679.60, 1,236,210.60 and 403,314.80 is: 605,310.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,679.60 : 1,236,210.60 = 403,314.80 : x
  2. Step 2: Convert to fraction form
    823,679.60/1,236,210.60 = 403,314.80/x
  3. Step 3: Cross multiply
    823,679.60x = 1,236,210.60 × 403,314.80
  4. Step 4: Simplify right side
    823,679.60x = 498,582,030,896.88
  5. Step 5: Solve for x
    x = 498,582,030,896.88/823,679.60
  6. Step 6: Final answer
    x = 605,310.65

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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.