Home / 685,621.57-946,160.41-379,691.25

Finding the Fourth Proportional to 685,621.57, 946,160.41 and 379,691.25

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Solution

The fourth proportional to 685,621.57, 946,160.41 and 379,691.25 is: 523,975.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,621.57 : 946,160.41 = 379,691.25 : x
  2. Step 2: Convert to fraction form
    685,621.57/946,160.41 = 379,691.25/x
  3. Step 3: Cross multiply
    685,621.57x = 946,160.41 × 379,691.25
  4. Step 4: Simplify right side
    685,621.57x = 359,248,828,773.41
  5. Step 5: Solve for x
    x = 359,248,828,773.41/685,621.57
  6. Step 6: Final answer
    x = 523,975.39

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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.