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Finding the Fourth Proportional to 907,937.40, 1,361,906.10 and 809,959.80

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Solution

The fourth proportional to 907,937.40, 1,361,906.10 and 809,959.80 is: 1,214,939.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,937.40 : 1,361,906.10 = 809,959.80 : x
  2. Step 2: Convert to fraction form
    907,937.40/1,361,906.10 = 809,959.80/x
  3. Step 3: Cross multiply
    907,937.40x = 1,361,906.10 × 809,959.80
  4. Step 4: Simplify right side
    907,937.40x = 1,103,089,192,374.78
  5. Step 5: Solve for x
    x = 1,103,089,192,374.78/907,937.40
  6. Step 6: Final answer
    x = 1,214,939.70

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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.