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Finding the Fourth Proportional to 12,805,339.56, 19,206,594.56 and 3,220,721.96

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Solution

The fourth proportional to 12,805,339.56, 19,206,594.56 and 3,220,721.96 is: 4,830,727.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,805,339.56 : 19,206,594.56 = 3,220,721.96 : x
  2. Step 2: Convert to fraction form
    12,805,339.56/19,206,594.56 = 3,220,721.96/x
  3. Step 3: Cross multiply
    12,805,339.56x = 19,206,594.56 × 3,220,721.96
  4. Step 4: Simplify right side
    12,805,339.56x = 61,859,100,876,208.53
  5. Step 5: Solve for x
    x = 61,859,100,876,208.53/12,805,339.56
  6. Step 6: Final answer
    x = 4,830,727.10

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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.