Home / 915,191.70-1,372,857.72-307,983

Finding the Fourth Proportional to 915,191.70, 1,372,857.72 and 307,983

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Solution

The fourth proportional to 915,191.70, 1,372,857.72 and 307,983 is: 461,998.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,191.70 : 1,372,857.72 = 307,983 : x
  2. Step 2: Convert to fraction form
    915,191.70/1,372,857.72 = 307,983/x
  3. Step 3: Cross multiply
    915,191.70x = 1,372,857.72 × 307,983
  4. Step 4: Simplify right side
    915,191.70x = 422,816,839,178.76
  5. Step 5: Solve for x
    x = 422,816,839,178.76/915,191.70
  6. Step 6: Final answer
    x = 461,998.11

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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.