Home / 491,955.28-678,949.32-301,095.76

Finding the Fourth Proportional to 491,955.28, 678,949.32 and 301,095.76

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Solution

The fourth proportional to 491,955.28, 678,949.32 and 301,095.76 is: 415,543.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,955.28 : 678,949.32 = 301,095.76 : x
  2. Step 2: Convert to fraction form
    491,955.28/678,949.32 = 301,095.76/x
  3. Step 3: Cross multiply
    491,955.28x = 678,949.32 × 301,095.76
  4. Step 4: Simplify right side
    491,955.28x = 204,428,761,506.88
  5. Step 5: Solve for x
    x = 204,428,761,506.88/491,955.28
  6. Step 6: Final answer
    x = 415,543.38

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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.