Home / 685,914.92-946,560.74-379,991.88

Finding the Fourth Proportional to 685,914.92, 946,560.74 and 379,991.88

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Solution

The fourth proportional to 685,914.92, 946,560.74 and 379,991.88 is: 524,387.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,914.92 : 946,560.74 = 379,991.88 : x
  2. Step 2: Convert to fraction form
    685,914.92/946,560.74 = 379,991.88/x
  3. Step 3: Cross multiply
    685,914.92x = 946,560.74 × 379,991.88
  4. Step 4: Simplify right side
    685,914.92x = 359,685,395,126.79
  5. Step 5: Solve for x
    x = 359,685,395,126.79/685,914.92
  6. Step 6: Final answer
    x = 524,387.77

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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.