Home / 669,237.56-923,142.12-397,126.16

Finding the Fourth Proportional to 669,237.56, 923,142.12 and 397,126.16

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Solution

The fourth proportional to 669,237.56, 923,142.12 and 397,126.16 is: 547,793.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,237.56 : 923,142.12 = 397,126.16 : x
  2. Step 2: Convert to fraction form
    669,237.56/923,142.12 = 397,126.16/x
  3. Step 3: Cross multiply
    669,237.56x = 923,142.12 × 397,126.16
  4. Step 4: Simplify right side
    669,237.56x = 366,603,885,249.86
  5. Step 5: Solve for x
    x = 366,603,885,249.86/669,237.56
  6. Step 6: Final answer
    x = 547,793.35

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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.