Home / 491,515.07-678,290.63-276,656.27

Finding the Fourth Proportional to 491,515.07, 678,290.63 and 276,656.27

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Solution

The fourth proportional to 491,515.07, 678,290.63 and 276,656.27 is: 381,785.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,515.07 : 678,290.63 = 276,656.27 : x
  2. Step 2: Convert to fraction form
    491,515.07/678,290.63 = 276,656.27/x
  3. Step 3: Cross multiply
    491,515.07x = 678,290.63 × 276,656.27
  4. Step 4: Simplify right side
    491,515.07x = 187,653,350,897.02
  5. Step 5: Solve for x
    x = 187,653,350,897.02/491,515.07
  6. Step 6: Final answer
    x = 381,785.55

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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.