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Finding the Fourth Proportional to 577,879.40, 866,821.80 and 203,902.40

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Solution

The fourth proportional to 577,879.40, 866,821.80 and 203,902.40 is: 305,854.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,879.40 : 866,821.80 = 203,902.40 : x
  2. Step 2: Convert to fraction form
    577,879.40/866,821.80 = 203,902.40/x
  3. Step 3: Cross multiply
    577,879.40x = 866,821.80 × 203,902.40
  4. Step 4: Simplify right side
    577,879.40x = 176,747,045,392.32
  5. Step 5: Solve for x
    x = 176,747,045,392.32/577,879.40
  6. Step 6: Final answer
    x = 305,854.55

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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.