Home / 810,899.84-1,216,233.92-278,410.88

Finding the Fourth Proportional to 810,899.84, 1,216,233.92 and 278,410.88

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Solution

The fourth proportional to 810,899.84, 1,216,233.92 and 278,410.88 is: 417,576.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,899.84 : 1,216,233.92 = 278,410.88 : x
  2. Step 2: Convert to fraction form
    810,899.84/1,216,233.92 = 278,410.88/x
  3. Step 3: Cross multiply
    810,899.84x = 1,216,233.92 × 278,410.88
  4. Step 4: Simplify right side
    810,899.84x = 338,612,755,953.05
  5. Step 5: Solve for x
    x = 338,612,755,953.05/810,899.84
  6. Step 6: Final answer
    x = 417,576.55

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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.