Home / 500,634.21-690,876-296,785.31

Finding the Fourth Proportional to 500,634.21, 690,876 and 296,785.31

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Solution

The fourth proportional to 500,634.21, 690,876 and 296,785.31 is: 409,564.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,634.21 : 690,876 = 296,785.31 : x
  2. Step 2: Convert to fraction form
    500,634.21/690,876 = 296,785.31/x
  3. Step 3: Cross multiply
    500,634.21x = 690,876 × 296,785.31
  4. Step 4: Simplify right side
    500,634.21x = 205,041,844,377.18
  5. Step 5: Solve for x
    x = 205,041,844,377.18/500,634.21
  6. Step 6: Final answer
    x = 409,564.19

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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.