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Finding the Fourth Proportional to 7,393,905.60, 11,069,085.60 and 5,509,003.20

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Solution

The fourth proportional to 7,393,905.60, 11,069,085.60 and 5,509,003.20 is: 8,247,282.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,393,905.60 : 11,069,085.60 = 5,509,003.20 : x
  2. Step 2: Convert to fraction form
    7,393,905.60/11,069,085.60 = 5,509,003.20/x
  3. Step 3: Cross multiply
    7,393,905.60x = 11,069,085.60 × 5,509,003.20
  4. Step 4: Simplify right side
    7,393,905.60x = 60,979,627,991,473.92
  5. Step 5: Solve for x
    x = 60,979,627,991,473.92/7,393,905.60
  6. Step 6: Final answer
    x = 8,247,282.46

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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.