Home / 709,766.68-979,419.18-403,761.64

Finding the Fourth Proportional to 709,766.68, 979,419.18 and 403,761.64

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Solution

The fourth proportional to 709,766.68, 979,419.18 and 403,761.64 is: 557,157.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,766.68 : 979,419.18 = 403,761.64 : x
  2. Step 2: Convert to fraction form
    709,766.68/979,419.18 = 403,761.64/x
  3. Step 3: Cross multiply
    709,766.68x = 979,419.18 × 403,761.64
  4. Step 4: Simplify right side
    709,766.68x = 395,451,894,364.26
  5. Step 5: Solve for x
    x = 395,451,894,364.26/709,766.68
  6. Step 6: Final answer
    x = 557,157.59

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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.