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Finding the Fourth Proportional to 2,649,986.31, 3,974,136.76 and 852,451.36

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Solution

The fourth proportional to 2,649,986.31, 3,974,136.76 and 852,451.36 is: 1,278,405.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,649,986.31 : 3,974,136.76 = 852,451.36 : x
  2. Step 2: Convert to fraction form
    2,649,986.31/3,974,136.76 = 852,451.36/x
  3. Step 3: Cross multiply
    2,649,986.31x = 3,974,136.76 × 852,451.36
  4. Step 4: Simplify right side
    2,649,986.31x = 3,387,758,285,887.99
  5. Step 5: Solve for x
    x = 3,387,758,285,887.99/2,649,986.31
  6. Step 6: Final answer
    x = 1,278,405.96

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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.