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Finding the Fourth Proportional to 809,793.90, 1,212,143.67 and 555,587.96

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Solution

The fourth proportional to 809,793.90, 1,212,143.67 and 555,587.96 is: 831,634.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,793.90 : 1,212,143.67 = 555,587.96 : x
  2. Step 2: Convert to fraction form
    809,793.90/1,212,143.67 = 555,587.96/x
  3. Step 3: Cross multiply
    809,793.90x = 1,212,143.67 × 555,587.96
  4. Step 4: Simplify right side
    809,793.90x = 673,452,422,781.50
  5. Step 5: Solve for x
    x = 673,452,422,781.50/809,793.90
  6. Step 6: Final answer
    x = 831,634.35

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1.5x scale

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.