Home / 639,836.82-959,398.02-402,671.25

Finding the Fourth Proportional to 639,836.82, 959,398.02 and 402,671.25

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Solution

The fourth proportional to 639,836.82, 959,398.02 and 402,671.25 is: 603,782.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,836.82 : 959,398.02 = 402,671.25 : x
  2. Step 2: Convert to fraction form
    639,836.82/959,398.02 = 402,671.25/x
  3. Step 3: Cross multiply
    639,836.82x = 959,398.02 × 402,671.25
  4. Step 4: Simplify right side
    639,836.82x = 386,321,999,960.93
  5. Step 5: Solve for x
    x = 386,321,999,960.93/639,836.82
  6. Step 6: Final answer
    x = 603,782.07

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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.