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Finding the Fourth Proportional to 5,109,608.47, 7,664,855.73 and 1,872,025.62

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Solution

The fourth proportional to 5,109,608.47, 7,664,855.73 and 1,872,025.62 is: 2,808,200.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109,608.47 : 7,664,855.73 = 1,872,025.62 : x
  2. Step 2: Convert to fraction form
    5,109,608.47/7,664,855.73 = 1,872,025.62/x
  3. Step 3: Cross multiply
    5,109,608.47x = 7,664,855.73 × 1,872,025.62
  4. Step 4: Simplify right side
    5,109,608.47x = 14,348,806,300,163.80
  5. Step 5: Solve for x
    x = 14,348,806,300,163.80/5,109,608.47
  6. Step 6: Final answer
    x = 2,808,200.74

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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.