Home / 491,916.51-678,865.77-274,125.42

Finding the Fourth Proportional to 491,916.51, 678,865.77 and 274,125.42

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Solution

The fourth proportional to 491,916.51, 678,865.77 and 274,125.42 is: 378,304.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,916.51 : 678,865.77 = 274,125.42 : x
  2. Step 2: Convert to fraction form
    491,916.51/678,865.77 = 274,125.42/x
  3. Step 3: Cross multiply
    491,916.51x = 678,865.77 × 274,125.42
  4. Step 4: Simplify right side
    491,916.51x = 186,094,364,324.87
  5. Step 5: Solve for x
    x = 186,094,364,324.87/491,916.51
  6. Step 6: Final answer
    x = 378,304.77

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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.