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Finding the Fourth Proportional to 491,738.88, 678,543.48 and 276,873.42

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Solution

The fourth proportional to 491,738.88, 678,543.48 and 276,873.42 is: 382,053.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,738.88 : 678,543.48 = 276,873.42 : x
  2. Step 2: Convert to fraction form
    491,738.88/678,543.48 = 276,873.42/x
  3. Step 3: Cross multiply
    491,738.88x = 678,543.48 × 276,873.42
  4. Step 4: Simplify right side
    491,738.88x = 187,870,653,926.30
  5. Step 5: Solve for x
    x = 187,870,653,926.30/491,738.88
  6. Step 6: Final answer
    x = 382,053.69

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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.