Home / 1,331,214.50-1,996,821.68-320,336.55

Finding the Fourth Proportional to 1,331,214.50, 1,996,821.68 and 320,336.55

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Solution

The fourth proportional to 1,331,214.50, 1,996,821.68 and 320,336.55 is: 480,504.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,214.50 : 1,996,821.68 = 320,336.55 : x
  2. Step 2: Convert to fraction form
    1,331,214.50/1,996,821.68 = 320,336.55/x
  3. Step 3: Cross multiply
    1,331,214.50x = 1,996,821.68 × 320,336.55
  4. Step 4: Simplify right side
    1,331,214.50x = 639,654,966,334.72
  5. Step 5: Solve for x
    x = 639,654,966,334.72/1,331,214.50
  6. Step 6: Final answer
    x = 480,504.81

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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.