Home / 531,815.74-733,910.39-290,099.38

Finding the Fourth Proportional to 531,815.74, 733,910.39 and 290,099.38

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Solution

The fourth proportional to 531,815.74, 733,910.39 and 290,099.38 is: 400,339.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,815.74 : 733,910.39 = 290,099.38 : x
  2. Step 2: Convert to fraction form
    531,815.74/733,910.39 = 290,099.38/x
  3. Step 3: Cross multiply
    531,815.74x = 733,910.39 × 290,099.38
  4. Step 4: Simplify right side
    531,815.74x = 212,906,949,114.56
  5. Step 5: Solve for x
    x = 212,906,949,114.56/531,815.74
  6. Step 6: Final answer
    x = 400,339.69

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.