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Finding the Fourth Proportional to 6,505,498.80, 8,978,218.20 and 3,605,828.40

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Solution

The fourth proportional to 6,505,498.80, 8,978,218.20 and 3,605,828.40 is: 4,976,392.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,505,498.80 : 8,978,218.20 = 3,605,828.40 : x
  2. Step 2: Convert to fraction form
    6,505,498.80/8,978,218.20 = 3,605,828.40/x
  3. Step 3: Cross multiply
    6,505,498.80x = 8,978,218.20 × 3,605,828.40
  4. Step 4: Simplify right side
    6,505,498.80x = 32,373,914,166,956.88
  5. Step 5: Solve for x
    x = 32,373,914,166,956.88/6,505,498.80
  6. Step 6: Final answer
    x = 4,976,392.30

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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.