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Finding the Fourth Proportional to 8,679,503.80, 11,978,425.02 and 4,813,237.72

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Solution

The fourth proportional to 8,679,503.80, 11,978,425.02 and 4,813,237.72 is: 6,642,661.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679,503.80 : 11,978,425.02 = 4,813,237.72 : x
  2. Step 2: Convert to fraction form
    8,679,503.80/11,978,425.02 = 4,813,237.72/x
  3. Step 3: Cross multiply
    8,679,503.80x = 11,978,425.02 × 4,813,237.72
  4. Step 4: Simplify right side
    8,679,503.80x = 57,655,007,132,455.75
  5. Step 5: Solve for x
    x = 57,655,007,132,455.75/8,679,503.80
  6. Step 6: Final answer
    x = 6,642,661.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.