Home / 669,649.14-923,581.11-440,441.73

Finding the Fourth Proportional to 669,649.14, 923,581.11 and 440,441.73

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Solution

The fourth proportional to 669,649.14, 923,581.11 and 440,441.73 is: 607,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,649.14 : 923,581.11 = 440,441.73 : x
  2. Step 2: Convert to fraction form
    669,649.14/923,581.11 = 440,441.73/x
  3. Step 3: Cross multiply
    669,649.14x = 923,581.11 × 440,441.73
  4. Step 4: Simplify right side
    669,649.14x = 406,783,661,883.72
  5. Step 5: Solve for x
    x = 406,783,661,883.72/669,649.14
  6. Step 6: Final answer
    x = 607,457.90

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Half scale
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Double scale
Find fourth proportional to 669,650.14, 923,582.49 and 440,442.73
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.