Home / 1,320,703.20-1,981,054.80-323,431.20

Finding the Fourth Proportional to 1,320,703.20, 1,981,054.80 and 323,431.20

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Solution

The fourth proportional to 1,320,703.20, 1,981,054.80 and 323,431.20 is: 485,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,703.20 : 1,981,054.80 = 323,431.20 : x
  2. Step 2: Convert to fraction form
    1,320,703.20/1,981,054.80 = 323,431.20/x
  3. Step 3: Cross multiply
    1,320,703.20x = 1,981,054.80 × 323,431.20
  4. Step 4: Simplify right side
    1,320,703.20x = 640,734,931,229.76
  5. Step 5: Solve for x
    x = 640,734,931,229.76/1,320,703.20
  6. Step 6: Final answer
    x = 485,146.80

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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.