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Finding the Fourth Proportional to 907,504.20, 1,361,256.30 and 765,786.60

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Solution

The fourth proportional to 907,504.20, 1,361,256.30 and 765,786.60 is: 1,148,679.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,504.20 : 1,361,256.30 = 765,786.60 : x
  2. Step 2: Convert to fraction form
    907,504.20/1,361,256.30 = 765,786.60/x
  3. Step 3: Cross multiply
    907,504.20x = 1,361,256.30 × 765,786.60
  4. Step 4: Simplify right side
    907,504.20x = 1,042,431,833,705.58
  5. Step 5: Solve for x
    x = 1,042,431,833,705.58/907,504.20
  6. Step 6: Final answer
    x = 1,148,679.90

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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.