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Finding the Fourth Proportional to 422,508.27, 630,486.61 and 377,640.75

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Solution

The fourth proportional to 422,508.27, 630,486.61 and 377,640.75 is: 563,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,508.27 : 630,486.61 = 377,640.75 : x
  2. Step 2: Convert to fraction form
    422,508.27/630,486.61 = 377,640.75/x
  3. Step 3: Cross multiply
    422,508.27x = 630,486.61 × 377,640.75
  4. Step 4: Simplify right side
    422,508.27x = 238,097,435,321.26
  5. Step 5: Solve for x
    x = 238,097,435,321.26/422,508.27
  6. Step 6: Final answer
    x = 563,533.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.