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Finding the Fourth Proportional to 661,516.20, 992,274.30 and 346,069.80

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Solution

The fourth proportional to 661,516.20, 992,274.30 and 346,069.80 is: 519,104.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,516.20 : 992,274.30 = 346,069.80 : x
  2. Step 2: Convert to fraction form
    661,516.20/992,274.30 = 346,069.80/x
  3. Step 3: Cross multiply
    661,516.20x = 992,274.30 × 346,069.80
  4. Step 4: Simplify right side
    661,516.20x = 343,396,168,546.14
  5. Step 5: Solve for x
    x = 343,396,168,546.14/661,516.20
  6. Step 6: Final answer
    x = 519,104.70

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Double scale
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Similar ratio
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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.