Home / 669,072.74-923,334.12-378,684.32

Finding the Fourth Proportional to 669,072.74, 923,334.12 and 378,684.32

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Solution

The fourth proportional to 669,072.74, 923,334.12 and 378,684.32 is: 522,592.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,072.74 : 923,334.12 = 378,684.32 : x
  2. Step 2: Convert to fraction form
    669,072.74/923,334.12 = 378,684.32/x
  3. Step 3: Cross multiply
    669,072.74x = 923,334.12 × 378,684.32
  4. Step 4: Simplify right side
    669,072.74x = 349,652,148,748.33
  5. Step 5: Solve for x
    x = 349,652,148,748.33/669,072.74
  6. Step 6: Final answer
    x = 522,592.13

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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.