Home / 812,117.10-1,218,175.65-664,494.60

Finding the Fourth Proportional to 812,117.10, 1,218,175.65 and 664,494.60

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Solution

The fourth proportional to 812,117.10, 1,218,175.65 and 664,494.60 is: 996,741.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,117.10 : 1,218,175.65 = 664,494.60 : x
  2. Step 2: Convert to fraction form
    812,117.10/1,218,175.65 = 664,494.60/x
  3. Step 3: Cross multiply
    812,117.10x = 1,218,175.65 × 664,494.60
  4. Step 4: Simplify right side
    812,117.10x = 809,471,141,276.49
  5. Step 5: Solve for x
    x = 809,471,141,276.49/812,117.10
  6. Step 6: Final answer
    x = 996,741.90

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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.