Home / 1,328,572.80-1,992,859.20-1,320,699.60

Finding the Fourth Proportional to 1,328,572.80, 1,992,859.20 and 1,320,699.60

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Solution

The fourth proportional to 1,328,572.80, 1,992,859.20 and 1,320,699.60 is: 1,981,049.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,572.80 : 1,992,859.20 = 1,320,699.60 : x
  2. Step 2: Convert to fraction form
    1,328,572.80/1,992,859.20 = 1,320,699.60/x
  3. Step 3: Cross multiply
    1,328,572.80x = 1,992,859.20 × 1,320,699.60
  4. Step 4: Simplify right side
    1,328,572.80x = 2,631,968,348,296.32
  5. Step 5: Solve for x
    x = 2,631,968,348,296.32/1,328,572.80
  6. Step 6: Final answer
    x = 1,981,049.40

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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.