Home / 685,492.05-946,094.17-399,180.95

Finding the Fourth Proportional to 685,492.05, 946,094.17 and 399,180.95

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Solution

The fourth proportional to 685,492.05, 946,094.17 and 399,180.95 is: 550,936.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,492.05 : 946,094.17 = 399,180.95 : x
  2. Step 2: Convert to fraction form
    685,492.05/946,094.17 = 399,180.95/x
  3. Step 3: Cross multiply
    685,492.05x = 946,094.17 × 399,180.95
  4. Step 4: Simplify right side
    685,492.05x = 377,662,764,839.59
  5. Step 5: Solve for x
    x = 377,662,764,839.59/685,492.05
  6. Step 6: Final answer
    x = 550,936.75

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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.