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Finding the Fourth Proportional to 28,392,816.80, 42,606,721.20 and 11,351,712.80

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Solution

The fourth proportional to 28,392,816.80, 42,606,721.20 and 11,351,712.80 is: 17,034,564.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392,816.80 : 42,606,721.20 = 11,351,712.80 : x
  2. Step 2: Convert to fraction form
    28,392,816.80/42,606,721.20 = 11,351,712.80/x
  3. Step 3: Cross multiply
    28,392,816.80x = 42,606,721.20 × 11,351,712.80
  4. Step 4: Simplify right side
    28,392,816.80x = 483,659,262,412,071.44
  5. Step 5: Solve for x
    x = 483,659,262,412,071.44/28,392,816.80
  6. Step 6: Final answer
    x = 17,034,564.26

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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.