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Finding the Fourth Proportional to 906,906.40, 1,360,359.60 and 808,928.80

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Solution

The fourth proportional to 906,906.40, 1,360,359.60 and 808,928.80 is: 1,213,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,906.40 : 1,360,359.60 = 808,928.80 : x
  2. Step 2: Convert to fraction form
    906,906.40/1,360,359.60 = 808,928.80/x
  3. Step 3: Cross multiply
    906,906.40x = 1,360,359.60 × 808,928.80
  4. Step 4: Simplify right side
    906,906.40x = 1,100,434,058,796.48
  5. Step 5: Solve for x
    x = 1,100,434,058,796.48/906,906.40
  6. Step 6: Final answer
    x = 1,213,393.20

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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.