Home / 686,254.17-946,803.78-414,218.73

Finding the Fourth Proportional to 686,254.17, 946,803.78 and 414,218.73

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Solution

The fourth proportional to 686,254.17, 946,803.78 and 414,218.73 is: 571,484.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,254.17 : 946,803.78 = 414,218.73 : x
  2. Step 2: Convert to fraction form
    686,254.17/946,803.78 = 414,218.73/x
  3. Step 3: Cross multiply
    686,254.17x = 946,803.78 × 414,218.73
  4. Step 4: Simplify right side
    686,254.17x = 392,183,859,310.80
  5. Step 5: Solve for x
    x = 392,183,859,310.80/686,254.17
  6. Step 6: Final answer
    x = 571,484.85

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Double scale
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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.