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Finding the Fourth Proportional to 668,879, 1,003,314.84 and 163,442.78

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Solution

The fourth proportional to 668,879, 1,003,314.84 and 163,442.78 is: 245,163.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,879 : 1,003,314.84 = 163,442.78 : x
  2. Step 2: Convert to fraction form
    668,879/1,003,314.84 = 163,442.78/x
  3. Step 3: Cross multiply
    668,879x = 1,003,314.84 × 163,442.78
  4. Step 4: Simplify right side
    668,879x = 163,984,566,664.86
  5. Step 5: Solve for x
    x = 163,984,566,664.86/668,879
  6. Step 6: Final answer
    x = 245,163.28

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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.