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Finding the Fourth Proportional to 1,275,703.94, 1,914,736.90 and 645,060.62

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Solution

The fourth proportional to 1,275,703.94, 1,914,736.90 and 645,060.62 is: 968,188.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,703.94 : 1,914,736.90 = 645,060.62 : x
  2. Step 2: Convert to fraction form
    1,275,703.94/1,914,736.90 = 645,060.62/x
  3. Step 3: Cross multiply
    1,275,703.94x = 1,914,736.90 × 645,060.62
  4. Step 4: Simplify right side
    1,275,703.94x = 1,235,121,371,850.88
  5. Step 5: Solve for x
    x = 1,235,121,371,850.88/1,275,703.94
  6. Step 6: Final answer
    x = 968,188.10

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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.