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Finding the Fourth Proportional to 609,639.40, 915,049.32 and 294,317.56

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Solution

The fourth proportional to 609,639.40, 915,049.32 and 294,317.56 is: 441,761.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,639.40 : 915,049.32 = 294,317.56 : x
  2. Step 2: Convert to fraction form
    609,639.40/915,049.32 = 294,317.56/x
  3. Step 3: Cross multiply
    609,639.40x = 915,049.32 × 294,317.56
  4. Step 4: Simplify right side
    609,639.40x = 269,315,083,142.06
  5. Step 5: Solve for x
    x = 269,315,083,142.06/609,639.40
  6. Step 6: Final answer
    x = 441,761.28

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1.5x scale

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.