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Finding the Fourth Proportional to 518,626.33, 715,701.66 and 300,879.03

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Solution

The fourth proportional to 518,626.33, 715,701.66 and 300,879.03 is: 415,211.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,626.33 : 715,701.66 = 300,879.03 : x
  2. Step 2: Convert to fraction form
    518,626.33/715,701.66 = 300,879.03/x
  3. Step 3: Cross multiply
    518,626.33x = 715,701.66 × 300,879.03
  4. Step 4: Simplify right side
    518,626.33x = 215,339,622,785.78
  5. Step 5: Solve for x
    x = 215,339,622,785.78/518,626.33
  6. Step 6: Final answer
    x = 415,211.51

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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.