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Finding the Fourth Proportional to 694,155.50, 957,927.92 and 388,228.22

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Solution

The fourth proportional to 694,155.50, 957,927.92 and 388,228.22 is: 535,751.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,155.50 : 957,927.92 = 388,228.22 : x
  2. Step 2: Convert to fraction form
    694,155.50/957,927.92 = 388,228.22/x
  3. Step 3: Cross multiply
    694,155.50x = 957,927.92 × 388,228.22
  4. Step 4: Simplify right side
    694,155.50x = 371,894,651,269.90
  5. Step 5: Solve for x
    x = 371,894,651,269.90/694,155.50
  6. Step 6: Final answer
    x = 535,751.21

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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.