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Finding the Fourth Proportional to 939,729.88, 1,409,679.92 and 265,818

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Solution

The fourth proportional to 939,729.88, 1,409,679.92 and 265,818 is: 398,751.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,729.88 : 1,409,679.92 = 265,818 : x
  2. Step 2: Convert to fraction form
    939,729.88/1,409,679.92 = 265,818/x
  3. Step 3: Cross multiply
    939,729.88x = 1,409,679.92 × 265,818
  4. Step 4: Simplify right side
    939,729.88x = 374,718,296,974.56
  5. Step 5: Solve for x
    x = 374,718,296,974.56/939,729.88
  6. Step 6: Final answer
    x = 398,751.07

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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.