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Finding the Fourth Proportional to 6,128,751.64, 8,455,652.82 and 3,954,739.69

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Solution

The fourth proportional to 6,128,751.64, 8,455,652.82 and 3,954,739.69 is: 5,456,234.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128,751.64 : 8,455,652.82 = 3,954,739.69 : x
  2. Step 2: Convert to fraction form
    6,128,751.64/8,455,652.82 = 3,954,739.69/x
  3. Step 3: Cross multiply
    6,128,751.64x = 8,455,652.82 × 3,954,739.69
  4. Step 4: Simplify right side
    6,128,751.64x = 33,439,905,812,114.43
  5. Step 5: Solve for x
    x = 33,439,905,812,114.43/6,128,751.64
  6. Step 6: Final answer
    x = 5,456,234.45

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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.