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Finding the Fourth Proportional to 6,400,679.54, 8,828,775.81 and 4,105,204.34

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Solution

The fourth proportional to 6,400,679.54, 8,828,775.81 and 4,105,204.34 is: 5,662,512.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,400,679.54 : 8,828,775.81 = 4,105,204.34 : x
  2. Step 2: Convert to fraction form
    6,400,679.54/8,828,775.81 = 4,105,204.34/x
  3. Step 3: Cross multiply
    6,400,679.54x = 8,828,775.81 × 4,105,204.34
  4. Step 4: Simplify right side
    6,400,679.54x = 36,243,928,772,099.02
  5. Step 5: Solve for x
    x = 36,243,928,772,099.02/6,400,679.54
  6. Step 6: Final answer
    x = 5,662,512.64

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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.