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Finding the Fourth Proportional to 7,993,770.40, 11,990,655.60 and 7,153,962.40

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Solution

The fourth proportional to 7,993,770.40, 11,990,655.60 and 7,153,962.40 is: 10,730,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,993,770.40 : 11,990,655.60 = 7,153,962.40 : x
  2. Step 2: Convert to fraction form
    7,993,770.40/11,990,655.60 = 7,153,962.40/x
  3. Step 3: Cross multiply
    7,993,770.40x = 11,990,655.60 × 7,153,962.40
  4. Step 4: Simplify right side
    7,993,770.40x = 85,780,699,313,749.44
  5. Step 5: Solve for x
    x = 85,780,699,313,749.44/7,993,770.40
  6. Step 6: Final answer
    x = 10,730,943.60

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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.