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Finding the Fourth Proportional to 570,540.20, 787,370.07 and 315,891.38

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Solution

The fourth proportional to 570,540.20, 787,370.07 and 315,891.38 is: 435,943.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,540.20 : 787,370.07 = 315,891.38 : x
  2. Step 2: Convert to fraction form
    570,540.20/787,370.07 = 315,891.38/x
  3. Step 3: Cross multiply
    570,540.20x = 787,370.07 × 315,891.38
  4. Step 4: Simplify right side
    570,540.20x = 248,723,414,046.15
  5. Step 5: Solve for x
    x = 248,723,414,046.15/570,540.20
  6. Step 6: Final answer
    x = 435,943.72

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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.