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Finding the Fourth Proportional to 685,874.46, 946,496.48 and 379,949.88

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Solution

The fourth proportional to 685,874.46, 946,496.48 and 379,949.88 is: 524,325.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,874.46 : 946,496.48 = 379,949.88 : x
  2. Step 2: Convert to fraction form
    685,874.46/946,496.48 = 379,949.88/x
  3. Step 3: Cross multiply
    685,874.46x = 946,496.48 × 379,949.88
  4. Step 4: Simplify right side
    685,874.46x = 359,621,223,996.42
  5. Step 5: Solve for x
    x = 359,621,223,996.42/685,874.46
  6. Step 6: Final answer
    x = 524,325.14

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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.