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Finding the Fourth Proportional to 7,881,870.60, 11,822,805.90 and 2,202,085.80

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Solution

The fourth proportional to 7,881,870.60, 11,822,805.90 and 2,202,085.80 is: 3,303,128.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881,870.60 : 11,822,805.90 = 2,202,085.80 : x
  2. Step 2: Convert to fraction form
    7,881,870.60/11,822,805.90 = 2,202,085.80/x
  3. Step 3: Cross multiply
    7,881,870.60x = 11,822,805.90 × 2,202,085.80
  4. Step 4: Simplify right side
    7,881,870.60x = 26,034,832,988,546.22
  5. Step 5: Solve for x
    x = 26,034,832,988,546.22/7,881,870.60
  6. Step 6: Final answer
    x = 3,303,128.70

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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.