Home / 1,320,800.40-1,981,200.60-323,528.40

Finding the Fourth Proportional to 1,320,800.40, 1,981,200.60 and 323,528.40

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Solution

The fourth proportional to 1,320,800.40, 1,981,200.60 and 323,528.40 is: 485,292.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,800.40 : 1,981,200.60 = 323,528.40 : x
  2. Step 2: Convert to fraction form
    1,320,800.40/1,981,200.60 = 323,528.40/x
  3. Step 3: Cross multiply
    1,320,800.40x = 1,981,200.60 × 323,528.40
  4. Step 4: Simplify right side
    1,320,800.40x = 640,974,660,197.04
  5. Step 5: Solve for x
    x = 640,974,660,197.04/1,320,800.40
  6. Step 6: Final answer
    x = 485,292.60

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Double scale
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1.5x scale

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.