Home / 668,820.20-1,003,334.87-219,438.86

Finding the Fourth Proportional to 668,820.20, 1,003,334.87 and 219,438.86

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Solution

The fourth proportional to 668,820.20, 1,003,334.87 and 219,438.86 is: 329,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,820.20 : 1,003,334.87 = 219,438.86 : x
  2. Step 2: Convert to fraction form
    668,820.20/1,003,334.87 = 219,438.86/x
  3. Step 3: Cross multiply
    668,820.20x = 1,003,334.87 × 219,438.86
  4. Step 4: Simplify right side
    668,820.20x = 220,170,663,127.98
  5. Step 5: Solve for x
    x = 220,170,663,127.98/668,820.20
  6. Step 6: Final answer
    x = 329,192.60

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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.