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Finding the Fourth Proportional to 419,314.75, 631,772.92 and 379,384.92

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Solution

The fourth proportional to 419,314.75, 631,772.92 and 379,384.92 is: 571,611.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,314.75 : 631,772.92 = 379,384.92 : x
  2. Step 2: Convert to fraction form
    419,314.75/631,772.92 = 379,384.92/x
  3. Step 3: Cross multiply
    419,314.75x = 631,772.92 × 379,384.92
  4. Step 4: Simplify right side
    419,314.75x = 239,685,118,712.37
  5. Step 5: Solve for x
    x = 239,685,118,712.37/419,314.75
  6. Step 6: Final answer
    x = 571,611.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.