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Finding the Fourth Proportional to 1,949,132.90, 2,921,736.02 and 812,523.90

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Solution

The fourth proportional to 1,949,132.90, 2,921,736.02 and 812,523.90 is: 1,217,967.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949,132.90 : 2,921,736.02 = 812,523.90 : x
  2. Step 2: Convert to fraction form
    1,949,132.90/2,921,736.02 = 812,523.90/x
  3. Step 3: Cross multiply
    1,949,132.90x = 2,921,736.02 × 812,523.90
  4. Step 4: Simplify right side
    1,949,132.90x = 2,373,980,345,740.88
  5. Step 5: Solve for x
    x = 2,373,980,345,740.88/1,949,132.90
  6. Step 6: Final answer
    x = 1,217,967.41

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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.