Home / 19,318,704.20-28,978,056.30-5,135,280.20

Finding the Fourth Proportional to 19,318,704.20, 28,978,056.30 and 5,135,280.20

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Solution

The fourth proportional to 19,318,704.20, 28,978,056.30 and 5,135,280.20 is: 7,702,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,318,704.20 : 28,978,056.30 = 5,135,280.20 : x
  2. Step 2: Convert to fraction form
    19,318,704.20/28,978,056.30 = 5,135,280.20/x
  3. Step 3: Cross multiply
    19,318,704.20x = 28,978,056.30 × 5,135,280.20
  4. Step 4: Simplify right side
    19,318,704.20x = 148,810,438,751,875.28
  5. Step 5: Solve for x
    x = 148,810,438,751,875.28/19,318,704.20
  6. Step 6: Final answer
    x = 7,702,920.30

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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.