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Finding the Fourth Proportional to 6,405,674.85, 8,839,756.13 and 3,505,032.45

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Solution

The fourth proportional to 6,405,674.85, 8,839,756.13 and 3,505,032.45 is: 4,836,903.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405,674.85 : 8,839,756.13 = 3,505,032.45 : x
  2. Step 2: Convert to fraction form
    6,405,674.85/8,839,756.13 = 3,505,032.45/x
  3. Step 3: Cross multiply
    6,405,674.85x = 8,839,756.13 × 3,505,032.45
  4. Step 4: Simplify right side
    6,405,674.85x = 30,983,632,068,211.26
  5. Step 5: Solve for x
    x = 30,983,632,068,211.26/6,405,674.85
  6. Step 6: Final answer
    x = 4,836,903.65

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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.