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Finding the Fourth Proportional to 633,639.48, 874,422.50 and 347,170.44

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Solution

The fourth proportional to 633,639.48, 874,422.50 and 347,170.44 is: 479,095.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,639.48 : 874,422.50 = 347,170.44 : x
  2. Step 2: Convert to fraction form
    633,639.48/874,422.50 = 347,170.44/x
  3. Step 3: Cross multiply
    633,639.48x = 874,422.50 × 347,170.44
  4. Step 4: Simplify right side
    633,639.48x = 303,573,644,070.90
  5. Step 5: Solve for x
    x = 303,573,644,070.90/633,639.48
  6. Step 6: Final answer
    x = 479,095.22

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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.