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Finding the Fourth Proportional to 12,579,751.68, 18,865,978.56 and 4,901,684

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Solution

The fourth proportional to 12,579,751.68, 18,865,978.56 and 4,901,684 is: 7,351,104.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579,751.68 : 18,865,978.56 = 4,901,684 : x
  2. Step 2: Convert to fraction form
    12,579,751.68/18,865,978.56 = 4,901,684/x
  3. Step 3: Cross multiply
    12,579,751.68x = 18,865,978.56 × 4,901,684
  4. Step 4: Simplify right side
    12,579,751.68x = 92,475,065,251,895.03
  5. Step 5: Solve for x
    x = 92,475,065,251,895.03/12,579,751.68
  6. Step 6: Final answer
    x = 7,351,104.19

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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.