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Finding the Fourth Proportional to 418,334.50, 629,777.95 and 381,133.63

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Solution

The fourth proportional to 418,334.50, 629,777.95 and 381,133.63 is: 573,774.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,334.50 : 629,777.95 = 381,133.63 : x
  2. Step 2: Convert to fraction form
    418,334.50/629,777.95 = 381,133.63/x
  3. Step 3: Cross multiply
    418,334.50x = 629,777.95 × 381,133.63
  4. Step 4: Simplify right side
    418,334.50x = 240,029,556,177.46
  5. Step 5: Solve for x
    x = 240,029,556,177.46/418,334.50
  6. Step 6: Final answer
    x = 573,774.23

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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.