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Finding the Fourth Proportional to 12,936,480.80, 19,404,778.80 and 3,351,178.40

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Solution

The fourth proportional to 12,936,480.80, 19,404,778.80 and 3,351,178.40 is: 5,026,782.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936,480.80 : 19,404,778.80 = 3,351,178.40 : x
  2. Step 2: Convert to fraction form
    12,936,480.80/19,404,778.80 = 3,351,178.40/x
  3. Step 3: Cross multiply
    12,936,480.80x = 19,404,778.80 × 3,351,178.40
  4. Step 4: Simplify right side
    12,936,480.80x = 65,028,875,571,337.92
  5. Step 5: Solve for x
    x = 65,028,875,571,337.92/12,936,480.80
  6. Step 6: Final answer
    x = 5,026,782.52

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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.