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Finding the Fourth Proportional to 628,712.22, 867,596.82 and 356,774.58

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Solution

The fourth proportional to 628,712.22, 867,596.82 and 356,774.58 is: 492,334.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,712.22 : 867,596.82 = 356,774.58 : x
  2. Step 2: Convert to fraction form
    628,712.22/867,596.82 = 356,774.58/x
  3. Step 3: Cross multiply
    628,712.22x = 867,596.82 × 356,774.58
  4. Step 4: Simplify right side
    628,712.22x = 309,536,491,064.84
  5. Step 5: Solve for x
    x = 309,536,491,064.84/628,712.22
  6. Step 6: Final answer
    x = 492,334.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.