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Finding the Fourth Proportional to 7,881,871.60, 11,822,807.40 and 2,202,086.80

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Solution

The fourth proportional to 7,881,871.60, 11,822,807.40 and 2,202,086.80 is: 3,303,130.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881,871.60 : 11,822,807.40 = 2,202,086.80 : x
  2. Step 2: Convert to fraction form
    7,881,871.60/11,822,807.40 = 2,202,086.80/x
  3. Step 3: Cross multiply
    7,881,871.60x = 11,822,807.40 × 2,202,086.80
  4. Step 4: Simplify right side
    7,881,871.60x = 26,034,848,114,482.32
  5. Step 5: Solve for x
    x = 26,034,848,114,482.32/7,881,871.60
  6. Step 6: Final answer
    x = 3,303,130.20

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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.