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Finding the Fourth Proportional to 630,617.40, 944,370.90 and 419,110.20

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Solution

The fourth proportional to 630,617.40, 944,370.90 and 419,110.20 is: 627,631.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,617.40 : 944,370.90 = 419,110.20 : x
  2. Step 2: Convert to fraction form
    630,617.40/944,370.90 = 419,110.20/x
  3. Step 3: Cross multiply
    630,617.40x = 944,370.90 × 419,110.20
  4. Step 4: Simplify right side
    630,617.40x = 395,795,476,773.18
  5. Step 5: Solve for x
    x = 395,795,476,773.18/630,617.40
  6. Step 6: Final answer
    x = 627,631.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.