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Finding the Fourth Proportional to 493,488.10, 740,232.15 and 422,629.30

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Solution

The fourth proportional to 493,488.10, 740,232.15 and 422,629.30 is: 633,943.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,488.10 : 740,232.15 = 422,629.30 : x
  2. Step 2: Convert to fraction form
    493,488.10/740,232.15 = 422,629.30/x
  3. Step 3: Cross multiply
    493,488.10x = 740,232.15 × 422,629.30
  4. Step 4: Simplify right side
    493,488.10x = 312,843,795,392.00
  5. Step 5: Solve for x
    x = 312,843,795,392.00/493,488.10
  6. Step 6: Final answer
    x = 633,943.95

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Similar ratio
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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.