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Finding the Fourth Proportional to 5,978,677.20, 8,968,015.80 and 5,648,002.80

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Solution

The fourth proportional to 5,978,677.20, 8,968,015.80 and 5,648,002.80 is: 8,472,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978,677.20 : 8,968,015.80 = 5,648,002.80 : x
  2. Step 2: Convert to fraction form
    5,978,677.20/8,968,015.80 = 5,648,002.80/x
  3. Step 3: Cross multiply
    5,978,677.20x = 8,968,015.80 × 5,648,002.80
  4. Step 4: Simplify right side
    5,978,677.20x = 50,651,378,348,844.24
  5. Step 5: Solve for x
    x = 50,651,378,348,844.24/5,978,677.20
  6. Step 6: Final answer
    x = 8,472,004.20

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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.