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Finding the Fourth Proportional to 6,652,389.20, 9,978,583.80 and 4,260,904.70

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Solution

The fourth proportional to 6,652,389.20, 9,978,583.80 and 4,260,904.70 is: 6,391,357.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,652,389.20 : 9,978,583.80 = 4,260,904.70 : x
  2. Step 2: Convert to fraction form
    6,652,389.20/9,978,583.80 = 4,260,904.70/x
  3. Step 3: Cross multiply
    6,652,389.20x = 9,978,583.80 × 4,260,904.70
  4. Step 4: Simplify right side
    6,652,389.20x = 42,517,794,612,763.87
  5. Step 5: Solve for x
    x = 42,517,794,612,763.87/6,652,389.20
  6. Step 6: Final answer
    x = 6,391,357.05

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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.