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Finding the Fourth Proportional to 10,919,770.40, 16,379,655.60 and 10,778,052.80

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Solution

The fourth proportional to 10,919,770.40, 16,379,655.60 and 10,778,052.80 is: 16,167,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919,770.40 : 16,379,655.60 = 10,778,052.80 : x
  2. Step 2: Convert to fraction form
    10,919,770.40/16,379,655.60 = 10,778,052.80/x
  3. Step 3: Cross multiply
    10,919,770.40x = 16,379,655.60 × 10,778,052.80
  4. Step 4: Simplify right side
    10,919,770.40x = 176,540,792,902,615.69
  5. Step 5: Solve for x
    x = 176,540,792,902,615.69/10,919,770.40
  6. Step 6: Final answer
    x = 16,167,079.20

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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.