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Finding the Fourth Proportional to 1,309,531.08, 1,964,287.98 and 336,893.88

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Solution

The fourth proportional to 1,309,531.08, 1,964,287.98 and 336,893.88 is: 505,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,531.08 : 1,964,287.98 = 336,893.88 : x
  2. Step 2: Convert to fraction form
    1,309,531.08/1,964,287.98 = 336,893.88/x
  3. Step 3: Cross multiply
    1,309,531.08x = 1,964,287.98 × 336,893.88
  4. Step 4: Simplify right side
    1,309,531.08x = 661,756,599,019.56
  5. Step 5: Solve for x
    x = 661,756,599,019.56/1,309,531.08
  6. Step 6: Final answer
    x = 505,338.60

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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.