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Finding the Fourth Proportional to 491,309.07, 677,998.67 and 276,449.01

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Solution

The fourth proportional to 491,309.07, 677,998.67 and 276,449.01 is: 381,495.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,309.07 : 677,998.67 = 276,449.01 : x
  2. Step 2: Convert to fraction form
    491,309.07/677,998.67 = 276,449.01/x
  3. Step 3: Cross multiply
    491,309.07x = 677,998.67 × 276,449.01
  4. Step 4: Simplify right side
    491,309.07x = 187,432,059,720.57
  5. Step 5: Solve for x
    x = 187,432,059,720.57/491,309.07
  6. Step 6: Final answer
    x = 381,495.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.