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Finding the Fourth Proportional to 28,978,233.40, 43,467,350.10 and 18,774,566.20

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Solution

The fourth proportional to 28,978,233.40, 43,467,350.10 and 18,774,566.20 is: 28,161,849.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,233.40 : 43,467,350.10 = 18,774,566.20 : x
  2. Step 2: Convert to fraction form
    28,978,233.40/43,467,350.10 = 18,774,566.20/x
  3. Step 3: Cross multiply
    28,978,233.40x = 43,467,350.10 × 18,774,566.20
  4. Step 4: Simplify right side
    28,978,233.40x = 816,080,641,991,026.62
  5. Step 5: Solve for x
    x = 816,080,641,991,026.62/28,978,233.40
  6. Step 6: Final answer
    x = 28,161,849.30

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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.