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Finding the Fourth Proportional to 847,879.60, 1,270,458.60 and 447,998.80

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Solution

The fourth proportional to 847,879.60, 1,270,458.60 and 447,998.80 is: 671,279.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,879.60 : 1,270,458.60 = 447,998.80 : x
  2. Step 2: Convert to fraction form
    847,879.60/1,270,458.60 = 447,998.80/x
  3. Step 3: Cross multiply
    847,879.60x = 1,270,458.60 × 447,998.80
  4. Step 4: Simplify right side
    847,879.60x = 569,163,928,249.68
  5. Step 5: Solve for x
    x = 569,163,928,249.68/847,879.60
  6. Step 6: Final answer
    x = 671,279.19

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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.