Home / 531,221.05-733,063.68-289,498.38

Finding the Fourth Proportional to 531,221.05, 733,063.68 and 289,498.38

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Solution

The fourth proportional to 531,221.05, 733,063.68 and 289,498.38 is: 399,496.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,221.05 : 733,063.68 = 289,498.38 : x
  2. Step 2: Convert to fraction form
    531,221.05/733,063.68 = 289,498.38/x
  3. Step 3: Cross multiply
    531,221.05x = 733,063.68 × 289,498.38
  4. Step 4: Simplify right side
    531,221.05x = 212,220,747,796.84
  5. Step 5: Solve for x
    x = 212,220,747,796.84/531,221.05
  6. Step 6: Final answer
    x = 399,496.12

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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.