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Finding the Fourth Proportional to 906,987.60, 1,360,481.40 and 851,000.40

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Solution

The fourth proportional to 906,987.60, 1,360,481.40 and 851,000.40 is: 1,276,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,987.60 : 1,360,481.40 = 851,000.40 : x
  2. Step 2: Convert to fraction form
    906,987.60/1,360,481.40 = 851,000.40/x
  3. Step 3: Cross multiply
    906,987.60x = 1,360,481.40 × 851,000.40
  4. Step 4: Simplify right side
    906,987.60x = 1,157,770,215,592.56
  5. Step 5: Solve for x
    x = 1,157,770,215,592.56/906,987.60
  6. Step 6: Final answer
    x = 1,276,500.60

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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.