Home / 665,178.45-997,913.48-215,822.85

Finding the Fourth Proportional to 665,178.45, 997,913.48 and 215,822.85

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Solution

The fourth proportional to 665,178.45, 997,913.48 and 215,822.85 is: 323,781.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,178.45 : 997,913.48 = 215,822.85 : x
  2. Step 2: Convert to fraction form
    665,178.45/997,913.48 = 215,822.85/x
  3. Step 3: Cross multiply
    665,178.45x = 997,913.48 × 215,822.85
  4. Step 4: Simplify right side
    665,178.45x = 215,372,530,227.90
  5. Step 5: Solve for x
    x = 215,372,530,227.90/665,178.45
  6. Step 6: Final answer
    x = 323,781.58

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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.