Home / 878,786.07-1,212,667.41-491,534.38

Finding the Fourth Proportional to 878,786.07, 1,212,667.41 and 491,534.38

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Solution

The fourth proportional to 878,786.07, 1,212,667.41 and 491,534.38 is: 678,285.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,786.07 : 1,212,667.41 = 491,534.38 : x
  2. Step 2: Convert to fraction form
    878,786.07/1,212,667.41 = 491,534.38/x
  3. Step 3: Cross multiply
    878,786.07x = 1,212,667.41 × 491,534.38
  4. Step 4: Simplify right side
    878,786.07x = 596,067,723,520.56
  5. Step 5: Solve for x
    x = 596,067,723,520.56/878,786.07
  6. Step 6: Final answer
    x = 678,285.36

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.