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Finding the Fourth Proportional to 6,387,564.80, 9,558,019.20 and 4,707,948.80

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Solution

The fourth proportional to 6,387,564.80, 9,558,019.20 and 4,707,948.80 is: 7,044,729.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387,564.80 : 9,558,019.20 = 4,707,948.80 : x
  2. Step 2: Convert to fraction form
    6,387,564.80/9,558,019.20 = 4,707,948.80/x
  3. Step 3: Cross multiply
    6,387,564.80x = 9,558,019.20 × 4,707,948.80
  4. Step 4: Simplify right side
    6,387,564.80x = 44,998,665,023,016.95
  5. Step 5: Solve for x
    x = 44,998,665,023,016.95/6,387,564.80
  6. Step 6: Final answer
    x = 7,044,729.32

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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.