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Finding the Fourth Proportional to 491,775.06, 678,714.26 and 276,957.12

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Solution

The fourth proportional to 491,775.06, 678,714.26 and 276,957.12 is: 382,237.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,775.06 : 678,714.26 = 276,957.12 : x
  2. Step 2: Convert to fraction form
    491,775.06/678,714.26 = 276,957.12/x
  3. Step 3: Cross multiply
    491,775.06x = 678,714.26 × 276,957.12
  4. Step 4: Simplify right side
    491,775.06x = 187,974,745,367.75
  5. Step 5: Solve for x
    x = 187,974,745,367.75/491,775.06
  6. Step 6: Final answer
    x = 382,237.25

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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.