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Finding the Fourth Proportional to 496,908.20, 685,718.34 and 276,144.74

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Solution

The fourth proportional to 496,908.20, 685,718.34 and 276,144.74 is: 381,071.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,908.20 : 685,718.34 = 276,144.74 : x
  2. Step 2: Convert to fraction form
    496,908.20/685,718.34 = 276,144.74/x
  3. Step 3: Cross multiply
    496,908.20x = 685,718.34 × 276,144.74
  4. Step 4: Simplify right side
    496,908.20x = 189,357,512,712.53
  5. Step 5: Solve for x
    x = 189,357,512,712.53/496,908.20
  6. Step 6: Final answer
    x = 381,071.42

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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.