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Finding the Fourth Proportional to 812,620.60, 1,216,166.10 and 713,087.80

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Solution

The fourth proportional to 812,620.60, 1,216,166.10 and 713,087.80 is: 1,067,205.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,620.60 : 1,216,166.10 = 713,087.80 : x
  2. Step 2: Convert to fraction form
    812,620.60/1,216,166.10 = 713,087.80/x
  3. Step 3: Cross multiply
    812,620.60x = 1,216,166.10 × 713,087.80
  4. Step 4: Simplify right side
    812,620.60x = 867,233,208,683.58
  5. Step 5: Solve for x
    x = 867,233,208,683.58/812,620.60
  6. Step 6: Final answer
    x = 1,067,205.54

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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.