Home / 548,844.10-821,653.35-409,221.70

Finding the Fourth Proportional to 548,844.10, 821,653.35 and 409,221.70

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Solution

The fourth proportional to 548,844.10, 821,653.35 and 409,221.70 is: 612,630.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,844.10 : 821,653.35 = 409,221.70 : x
  2. Step 2: Convert to fraction form
    548,844.10/821,653.35 = 409,221.70/x
  3. Step 3: Cross multiply
    548,844.10x = 821,653.35 × 409,221.70
  4. Step 4: Simplify right side
    548,844.10x = 336,238,380,697.70
  5. Step 5: Solve for x
    x = 336,238,380,697.70/548,844.10
  6. Step 6: Final answer
    x = 612,630.04

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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.