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Finding the Fourth Proportional to 2,978,129.80, 4,467,194.70 and 848,186.20

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Solution

The fourth proportional to 2,978,129.80, 4,467,194.70 and 848,186.20 is: 1,272,279.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,978,129.80 : 4,467,194.70 = 848,186.20 : x
  2. Step 2: Convert to fraction form
    2,978,129.80/4,467,194.70 = 848,186.20/x
  3. Step 3: Cross multiply
    2,978,129.80x = 4,467,194.70 × 848,186.20
  4. Step 4: Simplify right side
    2,978,129.80x = 3,789,012,897,253.14
  5. Step 5: Solve for x
    x = 3,789,012,897,253.14/2,978,129.80
  6. Step 6: Final answer
    x = 1,272,279.30

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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.