Home / 689,664.30-1,034,496.45-191,028.30

Finding the Fourth Proportional to 689,664.30, 1,034,496.45 and 191,028.30

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Solution

The fourth proportional to 689,664.30, 1,034,496.45 and 191,028.30 is: 286,542.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,664.30 : 1,034,496.45 = 191,028.30 : x
  2. Step 2: Convert to fraction form
    689,664.30/1,034,496.45 = 191,028.30/x
  3. Step 3: Cross multiply
    689,664.30x = 1,034,496.45 × 191,028.30
  4. Step 4: Simplify right side
    689,664.30x = 197,618,098,199.54
  5. Step 5: Solve for x
    x = 197,618,098,199.54/689,664.30
  6. Step 6: Final answer
    x = 286,542.45

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