Home / 686,243.95-1,029,434.36-254,076.78

Finding the Fourth Proportional to 686,243.95, 1,029,434.36 and 254,076.78

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Solution

The fourth proportional to 686,243.95, 1,029,434.36 and 254,076.78 is: 381,140.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,243.95 : 1,029,434.36 = 254,076.78 : x
  2. Step 2: Convert to fraction form
    686,243.95/1,029,434.36 = 254,076.78/x
  3. Step 3: Cross multiply
    686,243.95x = 1,029,434.36 × 254,076.78
  4. Step 4: Simplify right side
    686,243.95x = 261,555,361,358.97
  5. Step 5: Solve for x
    x = 261,555,361,358.97/686,243.95
  6. Step 6: Final answer
    x = 381,140.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.