Home / 669,154.08-923,451.12-378,742.56

Finding the Fourth Proportional to 669,154.08, 923,451.12 and 378,742.56

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Solution

The fourth proportional to 669,154.08, 923,451.12 and 378,742.56 is: 522,675.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,154.08 : 923,451.12 = 378,742.56 : x
  2. Step 2: Convert to fraction form
    669,154.08/923,451.12 = 378,742.56/x
  3. Step 3: Cross multiply
    669,154.08x = 923,451.12 × 378,742.56
  4. Step 4: Simplify right side
    669,154.08x = 349,750,241,223.67
  5. Step 5: Solve for x
    x = 349,750,241,223.67/669,154.08
  6. Step 6: Final answer
    x = 522,675.20

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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.