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Finding the Fourth Proportional to 550,217.77, 824,107.39 and 422,920.71

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Solution

The fourth proportional to 550,217.77, 824,107.39 and 422,920.71 is: 633,443.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,217.77 : 824,107.39 = 422,920.71 : x
  2. Step 2: Convert to fraction form
    550,217.77/824,107.39 = 422,920.71/x
  3. Step 3: Cross multiply
    550,217.77x = 824,107.39 × 422,920.71
  4. Step 4: Simplify right side
    550,217.77x = 348,532,081,437.75
  5. Step 5: Solve for x
    x = 348,532,081,437.75/550,217.77
  6. Step 6: Final answer
    x = 633,443.89

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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.