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Finding the Fourth Proportional to 518,406.72, 777,493.44 and 338,435.52

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Solution

The fourth proportional to 518,406.72, 777,493.44 and 338,435.52 is: 507,577.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,406.72 : 777,493.44 = 338,435.52 : x
  2. Step 2: Convert to fraction form
    518,406.72/777,493.44 = 338,435.52/x
  3. Step 3: Cross multiply
    518,406.72x = 777,493.44 × 338,435.52
  4. Step 4: Simplify right side
    518,406.72x = 263,131,396,662.99
  5. Step 5: Solve for x
    x = 263,131,396,662.99/518,406.72
  6. Step 6: Final answer
    x = 507,577.13

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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.