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Finding the Fourth Proportional to 5,317,798.52, 7,978,708.11 and 2,081,649.00

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Solution

The fourth proportional to 5,317,798.52, 7,978,708.11 and 2,081,649.00 is: 3,123,260.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,317,798.52 : 7,978,708.11 = 2,081,649.00 : x
  2. Step 2: Convert to fraction form
    5,317,798.52/7,978,708.11 = 2,081,649.00/x
  3. Step 3: Cross multiply
    5,317,798.52x = 7,978,708.11 × 2,081,649.00
  4. Step 4: Simplify right side
    5,317,798.52x = 16,608,869,777,906.46
  5. Step 5: Solve for x
    x = 16,608,869,777,906.46/5,317,798.52
  6. Step 6: Final answer
    x = 3,123,260.45

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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.