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Finding the Fourth Proportional to 911,693.52, 1,258,212.82 and 503,874.97

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Solution

The fourth proportional to 911,693.52, 1,258,212.82 and 503,874.97 is: 695,389.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,693.52 : 1,258,212.82 = 503,874.97 : x
  2. Step 2: Convert to fraction form
    911,693.52/1,258,212.82 = 503,874.97/x
  3. Step 3: Cross multiply
    911,693.52x = 1,258,212.82 × 503,874.97
  4. Step 4: Simplify right side
    911,693.52x = 633,981,942,525.90
  5. Step 5: Solve for x
    x = 633,981,942,525.90/911,693.52
  6. Step 6: Final answer
    x = 695,389.33

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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.