Home / 718,414.58-1,077,621.87-318,961.46

Finding the Fourth Proportional to 718,414.58, 1,077,621.87 and 318,961.46

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Solution

The fourth proportional to 718,414.58, 1,077,621.87 and 318,961.46 is: 478,442.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,414.58 : 1,077,621.87 = 318,961.46 : x
  2. Step 2: Convert to fraction form
    718,414.58/1,077,621.87 = 318,961.46/x
  3. Step 3: Cross multiply
    718,414.58x = 1,077,621.87 × 318,961.46
  4. Step 4: Simplify right side
    718,414.58x = 343,719,844,983.13
  5. Step 5: Solve for x
    x = 343,719,844,983.13/718,414.58
  6. Step 6: Final answer
    x = 478,442.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.