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Finding the Fourth Proportional to 609,640.40, 915,050.82 and 294,318.56

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Solution

The fourth proportional to 609,640.40, 915,050.82 and 294,318.56 is: 441,762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,640.40 : 915,050.82 = 294,318.56 : x
  2. Step 2: Convert to fraction form
    609,640.40/915,050.82 = 294,318.56/x
  3. Step 3: Cross multiply
    609,640.40x = 915,050.82 × 294,318.56
  4. Step 4: Simplify right side
    609,640.40x = 269,316,439,669.22
  5. Step 5: Solve for x
    x = 269,316,439,669.22/609,640.40
  6. Step 6: Final answer
    x = 441,762.78

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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.