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Finding the Fourth Proportional to 545,616.82, 817,027.81 and 455,435.31

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Solution

The fourth proportional to 545,616.82, 817,027.81 and 455,435.31 is: 681,986.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,616.82 : 817,027.81 = 455,435.31 : x
  2. Step 2: Convert to fraction form
    545,616.82/817,027.81 = 455,435.31/x
  3. Step 3: Cross multiply
    545,616.82x = 817,027.81 × 455,435.31
  4. Step 4: Simplify right side
    545,616.82x = 372,103,313,817.28
  5. Step 5: Solve for x
    x = 372,103,313,817.28/545,616.82
  6. Step 6: Final answer
    x = 681,986.51

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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.