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Finding the Fourth Proportional to 7,558,978.20, 11,338,467.30 and 6,897,629.40

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Solution

The fourth proportional to 7,558,978.20, 11,338,467.30 and 6,897,629.40 is: 10,346,444.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,558,978.20 : 11,338,467.30 = 6,897,629.40 : x
  2. Step 2: Convert to fraction form
    7,558,978.20/11,338,467.30 = 6,897,629.40/x
  3. Step 3: Cross multiply
    7,558,978.20x = 11,338,467.30 × 6,897,629.40
  4. Step 4: Simplify right side
    7,558,978.20x = 78,208,545,399,418.62
  5. Step 5: Solve for x
    x = 78,208,545,399,418.62/7,558,978.20
  6. Step 6: Final answer
    x = 10,346,444.10

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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.