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Finding the Fourth Proportional to 4,787,912.86, 7,181,338.77 and 1,713,780.91

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Solution

The fourth proportional to 4,787,912.86, 7,181,338.77 and 1,713,780.91 is: 2,570,481.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787,912.86 : 7,181,338.77 = 1,713,780.91 : x
  2. Step 2: Convert to fraction form
    4,787,912.86/7,181,338.77 = 1,713,780.91/x
  3. Step 3: Cross multiply
    4,787,912.86x = 7,181,338.77 × 1,713,780.91
  4. Step 4: Simplify right side
    4,787,912.86x = 12,307,241,292,268.88
  5. Step 5: Solve for x
    x = 12,307,241,292,268.88/4,787,912.86
  6. Step 6: Final answer
    x = 2,570,481.47

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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.