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Finding the Fourth Proportional to 672,054.40, 1,008,542.40 and 298,345.60

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Solution

The fourth proportional to 672,054.40, 1,008,542.40 and 298,345.60 is: 447,722.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,054.40 : 1,008,542.40 = 298,345.60 : x
  2. Step 2: Convert to fraction form
    672,054.40/1,008,542.40 = 298,345.60/x
  3. Step 3: Cross multiply
    672,054.40x = 1,008,542.40 × 298,345.60
  4. Step 4: Simplify right side
    672,054.40x = 300,894,187,453.44
  5. Step 5: Solve for x
    x = 300,894,187,453.44/672,054.40
  6. Step 6: Final answer
    x = 447,722.96

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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.