Home / 811,092.96-1,216,640.52-331,320.78

Finding the Fourth Proportional to 811,092.96, 1,216,640.52 and 331,320.78

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Solution

The fourth proportional to 811,092.96, 1,216,640.52 and 331,320.78 is: 496,981.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,092.96 : 1,216,640.52 = 331,320.78 : x
  2. Step 2: Convert to fraction form
    811,092.96/1,216,640.52 = 331,320.78/x
  3. Step 3: Cross multiply
    811,092.96x = 1,216,640.52 × 331,320.78
  4. Step 4: Simplify right side
    811,092.96x = 403,098,286,066.01
  5. Step 5: Solve for x
    x = 403,098,286,066.01/811,092.96
  6. Step 6: Final answer
    x = 496,981.61

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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.