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Finding the Fourth Proportional to 1,993,956.70, 2,990,935.05 and 731,620.30

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Solution

The fourth proportional to 1,993,956.70, 2,990,935.05 and 731,620.30 is: 1,097,430.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,956.70 : 2,990,935.05 = 731,620.30 : x
  2. Step 2: Convert to fraction form
    1,993,956.70/2,990,935.05 = 731,620.30/x
  3. Step 3: Cross multiply
    1,993,956.70x = 2,990,935.05 × 731,620.30
  4. Step 4: Simplify right side
    1,993,956.70x = 2,188,228,798,561.52
  5. Step 5: Solve for x
    x = 2,188,228,798,561.52/1,993,956.70
  6. Step 6: Final answer
    x = 1,097,430.45

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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.