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Finding the Fourth Proportional to 7,891,572.78, 11,837,703.69 and 2,500,620.48

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Solution

The fourth proportional to 7,891,572.78, 11,837,703.69 and 2,500,620.48 is: 3,751,039.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891,572.78 : 11,837,703.69 = 2,500,620.48 : x
  2. Step 2: Convert to fraction form
    7,891,572.78/11,837,703.69 = 2,500,620.48/x
  3. Step 3: Cross multiply
    7,891,572.78x = 11,837,703.69 × 2,500,620.48
  4. Step 4: Simplify right side
    7,891,572.78x = 29,601,604,283,385.57
  5. Step 5: Solve for x
    x = 29,601,604,283,385.57/7,891,572.78
  6. Step 6: Final answer
    x = 3,751,039.89

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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.