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Finding the Fourth Proportional to 500,121.72, 690,489.90 and 446,314.32

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Solution

The fourth proportional to 500,121.72, 690,489.90 and 446,314.32 is: 616,201.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,121.72 : 690,489.90 = 446,314.32 : x
  2. Step 2: Convert to fraction form
    500,121.72/690,489.90 = 446,314.32/x
  3. Step 3: Cross multiply
    500,121.72x = 690,489.90 × 446,314.32
  4. Step 4: Simplify right side
    500,121.72x = 308,175,530,185.37
  5. Step 5: Solve for x
    x = 308,175,530,185.37/500,121.72
  6. Step 6: Final answer
    x = 616,201.05

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1.5x scale

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.