Home / 781,007.05-1,171,690.80-331,742.44

Finding the Fourth Proportional to 781,007.05, 1,171,690.80 and 331,742.44

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Solution

The fourth proportional to 781,007.05, 1,171,690.80 and 331,742.44 is: 497,690.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,007.05 : 1,171,690.80 = 331,742.44 : x
  2. Step 2: Convert to fraction form
    781,007.05/1,171,690.80 = 331,742.44/x
  3. Step 3: Cross multiply
    781,007.05x = 1,171,690.80 × 331,742.44
  4. Step 4: Simplify right side
    781,007.05x = 388,699,564,917.55
  5. Step 5: Solve for x
    x = 388,699,564,917.55/781,007.05
  6. Step 6: Final answer
    x = 497,690.21

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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.