Home / 878,667.36-1,318,118.91-309,914.76

Finding the Fourth Proportional to 878,667.36, 1,318,118.91 and 309,914.76

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Solution

The fourth proportional to 878,667.36, 1,318,118.91 and 309,914.76 is: 464,913.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,667.36 : 1,318,118.91 = 309,914.76 : x
  2. Step 2: Convert to fraction form
    878,667.36/1,318,118.91 = 309,914.76/x
  3. Step 3: Cross multiply
    878,667.36x = 1,318,118.91 × 309,914.76
  4. Step 4: Simplify right side
    878,667.36x = 408,504,505,644.11
  5. Step 5: Solve for x
    x = 408,504,505,644.11/878,667.36
  6. Step 6: Final answer
    x = 464,913.71

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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.