Home / 496,128.20-744,192.30-419,145.80

Finding the Fourth Proportional to 496,128.20, 744,192.30 and 419,145.80

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Solution

The fourth proportional to 496,128.20, 744,192.30 and 419,145.80 is: 628,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,128.20 : 744,192.30 = 419,145.80 : x
  2. Step 2: Convert to fraction form
    496,128.20/744,192.30 = 419,145.80/x
  3. Step 3: Cross multiply
    496,128.20x = 744,192.30 × 419,145.80
  4. Step 4: Simplify right side
    496,128.20x = 311,925,076,937.34
  5. Step 5: Solve for x
    x = 311,925,076,937.34/496,128.20
  6. Step 6: Final answer
    x = 628,718.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.