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Finding the Fourth Proportional to 556,639.56, 768,562.02 and 342,067.32

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Solution

The fourth proportional to 556,639.56, 768,562.02 and 342,067.32 is: 472,298.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,639.56 : 768,562.02 = 342,067.32 : x
  2. Step 2: Convert to fraction form
    556,639.56/768,562.02 = 342,067.32/x
  3. Step 3: Cross multiply
    556,639.56x = 768,562.02 × 342,067.32
  4. Step 4: Simplify right side
    556,639.56x = 262,899,950,435.19
  5. Step 5: Solve for x
    x = 262,899,950,435.19/556,639.56
  6. Step 6: Final answer
    x = 472,298.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.