Home / 669,018.21-923,211.45-397,097.97

Finding the Fourth Proportional to 669,018.21, 923,211.45 and 397,097.97

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Solution

The fourth proportional to 669,018.21, 923,211.45 and 397,097.97 is: 547,975.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,018.21 : 923,211.45 = 397,097.97 : x
  2. Step 2: Convert to fraction form
    669,018.21/923,211.45 = 397,097.97/x
  3. Step 3: Cross multiply
    669,018.21x = 923,211.45 × 397,097.97
  4. Step 4: Simplify right side
    669,018.21x = 366,605,392,675.76
  5. Step 5: Solve for x
    x = 366,605,392,675.76/669,018.21
  6. Step 6: Final answer
    x = 547,975.21

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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.