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Finding the Fourth Proportional to 1,436,309.22, 1,982,106.12 and 791,740.20

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Solution

The fourth proportional to 1,436,309.22, 1,982,106.12 and 791,740.20 is: 1,092,601.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436,309.22 : 1,982,106.12 = 791,740.20 : x
  2. Step 2: Convert to fraction form
    1,436,309.22/1,982,106.12 = 791,740.20/x
  3. Step 3: Cross multiply
    1,436,309.22x = 1,982,106.12 × 791,740.20
  4. Step 4: Simplify right side
    1,436,309.22x = 1,569,313,095,870.02
  5. Step 5: Solve for x
    x = 1,569,313,095,870.02/1,436,309.22
  6. Step 6: Final answer
    x = 1,092,601.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.