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Finding the Fourth Proportional to 545,405.87, 817,835.04 and 317,775.17

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Solution

The fourth proportional to 545,405.87, 817,835.04 and 317,775.17 is: 476,503.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,405.87 : 817,835.04 = 317,775.17 : x
  2. Step 2: Convert to fraction form
    545,405.87/817,835.04 = 317,775.17/x
  3. Step 3: Cross multiply
    545,405.87x = 817,835.04 × 317,775.17
  4. Step 4: Simplify right side
    545,405.87x = 259,887,664,778.78
  5. Step 5: Solve for x
    x = 259,887,664,778.78/545,405.87
  6. Step 6: Final answer
    x = 476,503.25

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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.