Home / 686,255.28-946,805.45-414,219.83

Finding the Fourth Proportional to 686,255.28, 946,805.45 and 414,219.83

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Solution

The fourth proportional to 686,255.28, 946,805.45 and 414,219.83 is: 571,486.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,255.28 : 946,805.45 = 414,219.83 : x
  2. Step 2: Convert to fraction form
    686,255.28/946,805.45 = 414,219.83/x
  3. Step 3: Cross multiply
    686,255.28x = 946,805.45 × 414,219.83
  4. Step 4: Simplify right side
    686,255.28x = 392,185,585,736.95
  5. Step 5: Solve for x
    x = 392,185,585,736.95/686,255.28
  6. Step 6: Final answer
    x = 571,486.44

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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.