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Finding the Fourth Proportional to 839,879.20, 1,259,818.80 and 794,389.60

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Solution

The fourth proportional to 839,879.20, 1,259,818.80 and 794,389.60 is: 1,191,584.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,879.20 : 1,259,818.80 = 794,389.60 : x
  2. Step 2: Convert to fraction form
    839,879.20/1,259,818.80 = 794,389.60/x
  3. Step 3: Cross multiply
    839,879.20x = 1,259,818.80 × 794,389.60
  4. Step 4: Simplify right side
    839,879.20x = 1,000,786,952,604.48
  5. Step 5: Solve for x
    x = 1,000,786,952,604.48/839,879.20
  6. Step 6: Final answer
    x = 1,191,584.40

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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.