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Finding the Fourth Proportional to 7,839,804.21, 11,761,368.43 and 2,791,100.13

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Solution

The fourth proportional to 7,839,804.21, 11,761,368.43 and 2,791,100.13 is: 4,187,241.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839,804.21 : 11,761,368.43 = 2,791,100.13 : x
  2. Step 2: Convert to fraction form
    7,839,804.21/11,761,368.43 = 2,791,100.13/x
  3. Step 3: Cross multiply
    7,839,804.21x = 11,761,368.43 × 2,791,100.13
  4. Step 4: Simplify right side
    7,839,804.21x = 32,827,156,953,950.89
  5. Step 5: Solve for x
    x = 32,827,156,953,950.89/7,839,804.21
  6. Step 6: Final answer
    x = 4,187,241.94

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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.