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Finding the Fourth Proportional to 1,784,137.62, 2,676,731.40 and 718,631.22

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Solution

The fourth proportional to 1,784,137.62, 2,676,731.40 and 718,631.22 is: 1,078,158.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784,137.62 : 2,676,731.40 = 718,631.22 : x
  2. Step 2: Convert to fraction form
    1,784,137.62/2,676,731.40 = 718,631.22/x
  3. Step 3: Cross multiply
    1,784,137.62x = 2,676,731.40 × 718,631.22
  4. Step 4: Simplify right side
    1,784,137.62x = 1,923,582,751,594.31
  5. Step 5: Solve for x
    x = 1,923,582,751,594.31/1,784,137.62
  6. Step 6: Final answer
    x = 1,078,158.28

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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.