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Finding the Fourth Proportional to 438,910.12, 605,453.44 and 357,326.13

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Solution

The fourth proportional to 438,910.12, 605,453.44 and 357,326.13 is: 492,912.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,910.12 : 605,453.44 = 357,326.13 : x
  2. Step 2: Convert to fraction form
    438,910.12/605,453.44 = 357,326.13/x
  3. Step 3: Cross multiply
    438,910.12x = 605,453.44 × 357,326.13
  4. Step 4: Simplify right side
    438,910.12x = 216,344,334,610.39
  5. Step 5: Solve for x
    x = 216,344,334,610.39/438,910.12
  6. Step 6: Final answer
    x = 492,912.61

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1.5x scale

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.