Home / 639,056.98-958,080.30-319,044.61

Finding the Fourth Proportional to 639,056.98, 958,080.30 and 319,044.61

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Solution

The fourth proportional to 639,056.98, 958,080.30 and 319,044.61 is: 478,314.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,056.98 : 958,080.30 = 319,044.61 : x
  2. Step 2: Convert to fraction form
    639,056.98/958,080.30 = 319,044.61/x
  3. Step 3: Cross multiply
    639,056.98x = 958,080.30 × 319,044.61
  4. Step 4: Simplify right side
    639,056.98x = 305,670,355,662.18
  5. Step 5: Solve for x
    x = 305,670,355,662.18/639,056.98
  6. Step 6: Final answer
    x = 478,314.71

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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.