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Finding the Fourth Proportional to 630,514.40, 944,216.40 and 419,007.20

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Solution

The fourth proportional to 630,514.40, 944,216.40 and 419,007.20 is: 627,477.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,514.40 : 944,216.40 = 419,007.20 : x
  2. Step 2: Convert to fraction form
    630,514.40/944,216.40 = 419,007.20/x
  3. Step 3: Cross multiply
    630,514.40x = 944,216.40 × 419,007.20
  4. Step 4: Simplify right side
    630,514.40x = 395,633,469,958.08
  5. Step 5: Solve for x
    x = 395,633,469,958.08/630,514.40
  6. Step 6: Final answer
    x = 627,477.29

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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.