Home / 645,511.83-966,197.39-345,241.59

Finding the Fourth Proportional to 645,511.83, 966,197.39 and 345,241.59

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Solution

The fourth proportional to 645,511.83, 966,197.39 and 345,241.59 is: 516,755.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,511.83 : 966,197.39 = 345,241.59 : x
  2. Step 2: Convert to fraction form
    645,511.83/966,197.39 = 345,241.59/x
  3. Step 3: Cross multiply
    645,511.83x = 966,197.39 × 345,241.59
  4. Step 4: Simplify right side
    645,511.83x = 333,571,521,451.24
  5. Step 5: Solve for x
    x = 333,571,521,451.24/645,511.83
  6. Step 6: Final answer
    x = 516,755.09

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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.