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Finding the Fourth Proportional to 5,389,985.40, 8,084,978.10 and 2,694,726.60

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Solution

The fourth proportional to 5,389,985.40, 8,084,978.10 and 2,694,726.60 is: 4,042,089.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389,985.40 : 8,084,978.10 = 2,694,726.60 : x
  2. Step 2: Convert to fraction form
    5,389,985.40/8,084,978.10 = 2,694,726.60/x
  3. Step 3: Cross multiply
    5,389,985.40x = 8,084,978.10 × 2,694,726.60
  4. Step 4: Simplify right side
    5,389,985.40x = 21,786,805,546,487.46
  5. Step 5: Solve for x
    x = 21,786,805,546,487.46/5,389,985.40
  6. Step 6: Final answer
    x = 4,042,089.90

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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.