Home / 639,085.40-958,628.10-403,472.60

Finding the Fourth Proportional to 639,085.40, 958,628.10 and 403,472.60

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Solution

The fourth proportional to 639,085.40, 958,628.10 and 403,472.60 is: 605,208.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,085.40 : 958,628.10 = 403,472.60 : x
  2. Step 2: Convert to fraction form
    639,085.40/958,628.10 = 403,472.60/x
  3. Step 3: Cross multiply
    639,085.40x = 958,628.10 × 403,472.60
  4. Step 4: Simplify right side
    639,085.40x = 386,780,171,940.06
  5. Step 5: Solve for x
    x = 386,780,171,940.06/639,085.40
  6. Step 6: Final answer
    x = 605,208.90

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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.