Home / 518,067.58-777,631.47-427,822.87

Finding the Fourth Proportional to 518,067.58, 777,631.47 and 427,822.87

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Solution

The fourth proportional to 518,067.58, 777,631.47 and 427,822.87 is: 642,172.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,067.58 : 777,631.47 = 427,822.87 : x
  2. Step 2: Convert to fraction form
    518,067.58/777,631.47 = 427,822.87/x
  3. Step 3: Cross multiply
    518,067.58x = 777,631.47 × 427,822.87
  4. Step 4: Simplify right side
    518,067.58x = 332,688,527,297.72
  5. Step 5: Solve for x
    x = 332,688,527,297.72/518,067.58
  6. Step 6: Final answer
    x = 642,172.06

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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.