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Finding the Fourth Proportional to 911,370.92, 1,257,687.93 and 503,472.74

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Solution

The fourth proportional to 911,370.92, 1,257,687.93 and 503,472.74 is: 694,790.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,370.92 : 1,257,687.93 = 503,472.74 : x
  2. Step 2: Convert to fraction form
    911,370.92/1,257,687.93 = 503,472.74/x
  3. Step 3: Cross multiply
    911,370.92x = 1,257,687.93 × 503,472.74
  4. Step 4: Simplify right side
    911,370.92x = 633,211,594,156.42
  5. Step 5: Solve for x
    x = 633,211,594,156.42/911,370.92
  6. Step 6: Final answer
    x = 694,790.21

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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.