Home / 915,164.94-1,372,747.41-316,140.78

Finding the Fourth Proportional to 915,164.94, 1,372,747.41 and 316,140.78

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Solution

The fourth proportional to 915,164.94, 1,372,747.41 and 316,140.78 is: 474,211.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,164.94 : 1,372,747.41 = 316,140.78 : x
  2. Step 2: Convert to fraction form
    915,164.94/1,372,747.41 = 316,140.78/x
  3. Step 3: Cross multiply
    915,164.94x = 1,372,747.41 × 316,140.78
  4. Step 4: Simplify right side
    915,164.94x = 433,981,436,940.38
  5. Step 5: Solve for x
    x = 433,981,436,940.38/915,164.94
  6. Step 6: Final answer
    x = 474,211.17

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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.