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Finding the Fourth Proportional to 8,978,897.20, 13,468,345.80 and 6,286,262.80

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Solution

The fourth proportional to 8,978,897.20, 13,468,345.80 and 6,286,262.80 is: 9,429,394.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,978,897.20 : 13,468,345.80 = 6,286,262.80 : x
  2. Step 2: Convert to fraction form
    8,978,897.20/13,468,345.80 = 6,286,262.80/x
  3. Step 3: Cross multiply
    8,978,897.20x = 13,468,345.80 × 6,286,262.80
  4. Step 4: Simplify right side
    8,978,897.20x = 84,665,561,180,076.23
  5. Step 5: Solve for x
    x = 84,665,561,180,076.23/8,978,897.20
  6. Step 6: Final answer
    x = 9,429,394.20

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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.