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Finding the Fourth Proportional to 491,222.08, 677,831.52 and 276,436

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Solution

The fourth proportional to 491,222.08, 677,831.52 and 276,436 is: 381,450.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,222.08 : 677,831.52 = 276,436 : x
  2. Step 2: Convert to fraction form
    491,222.08/677,831.52 = 276,436/x
  3. Step 3: Cross multiply
    491,222.08x = 677,831.52 × 276,436
  4. Step 4: Simplify right side
    491,222.08x = 187,377,034,062.72
  5. Step 5: Solve for x
    x = 187,377,034,062.72/491,222.08
  6. Step 6: Final answer
    x = 381,450.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.