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Finding the Fourth Proportional to 518,662.01, 777,992.99 and 139,583.58

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Solution

The fourth proportional to 518,662.01, 777,992.99 and 139,583.58 is: 209,375.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,662.01 : 777,992.99 = 139,583.58 : x
  2. Step 2: Convert to fraction form
    518,662.01/777,992.99 = 139,583.58/x
  3. Step 3: Cross multiply
    518,662.01x = 777,992.99 × 139,583.58
  4. Step 4: Simplify right side
    518,662.01x = 108,595,042,869.14
  5. Step 5: Solve for x
    x = 108,595,042,869.14/518,662.01
  6. Step 6: Final answer
    x = 209,375.36

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1.5x scale

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.