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Finding the Fourth Proportional to 7,230,807.84, 9,978,510.96 and 3,967,644

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Solution

The fourth proportional to 7,230,807.84, 9,978,510.96 and 3,967,644 is: 5,475,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,230,807.84 : 9,978,510.96 = 3,967,644 : x
  2. Step 2: Convert to fraction form
    7,230,807.84/9,978,510.96 = 3,967,644/x
  3. Step 3: Cross multiply
    7,230,807.84x = 9,978,510.96 × 3,967,644
  4. Step 4: Simplify right side
    7,230,807.84x = 39,591,179,139,378.24
  5. Step 5: Solve for x
    x = 39,591,179,139,378.24/7,230,807.84
  6. Step 6: Final answer
    x = 5,475,346.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.