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Finding the Fourth Proportional to 636,480.57, 954,516.64 and 209,920.49

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Solution

The fourth proportional to 636,480.57, 954,516.64 and 209,920.49 is: 314,813.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,480.57 : 954,516.64 = 209,920.49 : x
  2. Step 2: Convert to fraction form
    636,480.57/954,516.64 = 209,920.49/x
  3. Step 3: Cross multiply
    636,480.57x = 954,516.64 × 209,920.49
  4. Step 4: Simplify right side
    636,480.57x = 200,372,600,781.95
  5. Step 5: Solve for x
    x = 200,372,600,781.95/636,480.57
  6. Step 6: Final answer
    x = 314,813.38

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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.