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Finding the Fourth Proportional to 1,330,584.60, 1,995,876.90 and 656,769.90

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Solution

The fourth proportional to 1,330,584.60, 1,995,876.90 and 656,769.90 is: 985,154.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,584.60 : 1,995,876.90 = 656,769.90 : x
  2. Step 2: Convert to fraction form
    1,330,584.60/1,995,876.90 = 656,769.90/x
  3. Step 3: Cross multiply
    1,330,584.60x = 1,995,876.90 × 656,769.90
  4. Step 4: Simplify right side
    1,330,584.60x = 1,310,831,872,025.31
  5. Step 5: Solve for x
    x = 1,310,831,872,025.31/1,330,584.60
  6. Step 6: Final answer
    x = 985,154.85

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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.