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Finding the Fourth Proportional to 491,709.42, 678,506.22 and 276,845.58

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Solution

The fourth proportional to 491,709.42, 678,506.22 and 276,845.58 is: 382,017.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,709.42 : 678,506.22 = 276,845.58 : x
  2. Step 2: Convert to fraction form
    491,709.42/678,506.22 = 276,845.58/x
  3. Step 3: Cross multiply
    491,709.42x = 678,506.22 × 276,845.58
  4. Step 4: Simplify right side
    491,709.42x = 187,841,448,009.51
  5. Step 5: Solve for x
    x = 187,841,448,009.51/491,709.42
  6. Step 6: Final answer
    x = 382,017.18

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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.