Home / 5,318,808,006.40-7,978,212,009.60-3,114,815,891.20

Finding the Fourth Proportional to 5,318,808,006.40, 7,978,212,009.60 and 3,114,815,891.20

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Solution

The fourth proportional to 5,318,808,006.40, 7,978,212,009.60 and 3,114,815,891.20 is: 4,672,223,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318,808,006.40 : 7,978,212,009.60 = 3,114,815,891.20 : x
  2. Step 2: Convert to fraction form
    5,318,808,006.40/7,978,212,009.60 = 3,114,815,891.20/x
  3. Step 3: Cross multiply
    5,318,808,006.40x = 7,978,212,009.60 × 3,114,815,891.20
  4. Step 4: Simplify right side
    5,318,808,006.40x = 24,850,661,550,864,764,928
  5. Step 5: Solve for x
    x = 24,850,661,550,864,764,928/5,318,808,006.40
  6. Step 6: Final answer
    x = 4,672,223,836.80

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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.