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Finding the Fourth Proportional to 493,642.80, 740,464.20 and 322,400.70

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Solution

The fourth proportional to 493,642.80, 740,464.20 and 322,400.70 is: 483,601.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,642.80 : 740,464.20 = 322,400.70 : x
  2. Step 2: Convert to fraction form
    493,642.80/740,464.20 = 322,400.70/x
  3. Step 3: Cross multiply
    493,642.80x = 740,464.20 × 322,400.70
  4. Step 4: Simplify right side
    493,642.80x = 238,726,176,404.94
  5. Step 5: Solve for x
    x = 238,726,176,404.94/493,642.80
  6. Step 6: Final answer
    x = 483,601.05

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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.