Home / 669,030.35-923,261.49-378,636.57

Finding the Fourth Proportional to 669,030.35, 923,261.49 and 378,636.57

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Solution

The fourth proportional to 669,030.35, 923,261.49 and 378,636.57 is: 522,518.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,030.35 : 923,261.49 = 378,636.57 : x
  2. Step 2: Convert to fraction form
    669,030.35/923,261.49 = 378,636.57/x
  3. Step 3: Cross multiply
    669,030.35x = 923,261.49 × 378,636.57
  4. Step 4: Simplify right side
    669,030.35x = 349,580,563,786.69
  5. Step 5: Solve for x
    x = 349,580,563,786.69/669,030.35
  6. Step 6: Final answer
    x = 522,518.25

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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.