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Finding the Fourth Proportional to 827,066.40, 1,240,891.20 and 797,906.40

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Solution

The fourth proportional to 827,066.40, 1,240,891.20 and 797,906.40 is: 1,197,140.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,066.40 : 1,240,891.20 = 797,906.40 : x
  2. Step 2: Convert to fraction form
    827,066.40/1,240,891.20 = 797,906.40/x
  3. Step 3: Cross multiply
    827,066.40x = 1,240,891.20 × 797,906.40
  4. Step 4: Simplify right side
    827,066.40x = 990,115,030,183.68
  5. Step 5: Solve for x
    x = 990,115,030,183.68/827,066.40
  6. Step 6: Final answer
    x = 1,197,140.92

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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.