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Finding the Fourth Proportional to 545,778.62, 818,815.64 and 309,287.38

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Solution

The fourth proportional to 545,778.62, 818,815.64 and 309,287.38 is: 464,014.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,778.62 : 818,815.64 = 309,287.38 : x
  2. Step 2: Convert to fraction form
    545,778.62/818,815.64 = 309,287.38/x
  3. Step 3: Cross multiply
    545,778.62x = 818,815.64 × 309,287.38
  4. Step 4: Simplify right side
    545,778.62x = 253,249,341,940.43
  5. Step 5: Solve for x
    x = 253,249,341,940.43/545,778.62
  6. Step 6: Final answer
    x = 464,014.77

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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.