Home / 491,619.34-678,386.19-273,820.71

Finding the Fourth Proportional to 491,619.34, 678,386.19 and 273,820.71

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Solution

The fourth proportional to 491,619.34, 678,386.19 and 273,820.71 is: 377,845.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,619.34 : 678,386.19 = 273,820.71 : x
  2. Step 2: Convert to fraction form
    491,619.34/678,386.19 = 273,820.71/x
  3. Step 3: Cross multiply
    491,619.34x = 678,386.19 × 273,820.71
  4. Step 4: Simplify right side
    491,619.34x = 185,756,187,173.17
  5. Step 5: Solve for x
    x = 185,756,187,173.17/491,619.34
  6. Step 6: Final answer
    x = 377,845.57

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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.