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Finding the Fourth Proportional to 3,985,487.20, 5,978,230.80 and 3,677,557.60

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Solution

The fourth proportional to 3,985,487.20, 5,978,230.80 and 3,677,557.60 is: 5,516,336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985,487.20 : 5,978,230.80 = 3,677,557.60 : x
  2. Step 2: Convert to fraction form
    3,985,487.20/5,978,230.80 = 3,677,557.60/x
  3. Step 3: Cross multiply
    3,985,487.20x = 5,978,230.80 × 3,677,557.60
  4. Step 4: Simplify right side
    3,985,487.20x = 21,985,288,113,094.08
  5. Step 5: Solve for x
    x = 21,985,288,113,094.08/3,985,487.20
  6. Step 6: Final answer
    x = 5,516,336.40

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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.