Home / 673,786.84-929,719.92-387,251.60

Finding the Fourth Proportional to 673,786.84, 929,719.92 and 387,251.60

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Solution

The fourth proportional to 673,786.84, 929,719.92 and 387,251.60 is: 534,346.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,786.84 : 929,719.92 = 387,251.60 : x
  2. Step 2: Convert to fraction form
    673,786.84/929,719.92 = 387,251.60/x
  3. Step 3: Cross multiply
    673,786.84x = 929,719.92 × 387,251.60
  4. Step 4: Simplify right side
    673,786.84x = 360,035,526,571.87
  5. Step 5: Solve for x
    x = 360,035,526,571.87/673,786.84
  6. Step 6: Final answer
    x = 534,346.33

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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.