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Finding the Fourth Proportional to 515,616.55, 773,412.94 and 303,728.61

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Solution

The fourth proportional to 515,616.55, 773,412.94 and 303,728.61 is: 455,585.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,616.55 : 773,412.94 = 303,728.61 : x
  2. Step 2: Convert to fraction form
    515,616.55/773,412.94 = 303,728.61/x
  3. Step 3: Cross multiply
    515,616.55x = 773,412.94 × 303,728.61
  4. Step 4: Simplify right side
    515,616.55x = 234,907,640,502.17
  5. Step 5: Solve for x
    x = 234,907,640,502.17/515,616.55
  6. Step 6: Final answer
    x = 455,585.92

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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.