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Finding the Fourth Proportional to 545,137.45, 817,709.24 and 485,442.59

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Solution

The fourth proportional to 545,137.45, 817,709.24 and 485,442.59 is: 728,166.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,137.45 : 817,709.24 = 485,442.59 : x
  2. Step 2: Convert to fraction form
    545,137.45/817,709.24 = 485,442.59/x
  3. Step 3: Cross multiply
    545,137.45x = 817,709.24 × 485,442.59
  4. Step 4: Simplify right side
    545,137.45x = 396,950,891,332.53
  5. Step 5: Solve for x
    x = 396,950,891,332.53/545,137.45
  6. Step 6: Final answer
    x = 728,166.61

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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.