Home / 461,288.70-636,624.09-279,986.40

Finding the Fourth Proportional to 461,288.70, 636,624.09 and 279,986.40

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Solution

The fourth proportional to 461,288.70, 636,624.09 and 279,986.40 is: 386,408.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,288.70 : 636,624.09 = 279,986.40 : x
  2. Step 2: Convert to fraction form
    461,288.70/636,624.09 = 279,986.40/x
  3. Step 3: Cross multiply
    461,288.70x = 636,624.09 × 279,986.40
  4. Step 4: Simplify right side
    461,288.70x = 178,246,087,112.38
  5. Step 5: Solve for x
    x = 178,246,087,112.38/461,288.70
  6. Step 6: Final answer
    x = 386,408.96

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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.