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Finding the Fourth Proportional to 635,942.70, 877,409.55 and 381,200.94

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Solution

The fourth proportional to 635,942.70, 877,409.55 and 381,200.94 is: 525,942.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,942.70 : 877,409.55 = 381,200.94 : x
  2. Step 2: Convert to fraction form
    635,942.70/877,409.55 = 381,200.94/x
  3. Step 3: Cross multiply
    635,942.70x = 877,409.55 × 381,200.94
  4. Step 4: Simplify right side
    635,942.70x = 334,469,345,224.98
  5. Step 5: Solve for x
    x = 334,469,345,224.98/635,942.70
  6. Step 6: Final answer
    x = 525,942.58

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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.