Home / 438,912.12-605,456.20-357,328.13

Finding the Fourth Proportional to 438,912.12, 605,456.20 and 357,328.13

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Solution

The fourth proportional to 438,912.12, 605,456.20 and 357,328.13 is: 492,915.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,912.12 : 605,456.20 = 357,328.13 : x
  2. Step 2: Convert to fraction form
    438,912.12/605,456.20 = 357,328.13/x
  3. Step 3: Cross multiply
    438,912.12x = 605,456.20 × 357,328.13
  4. Step 4: Simplify right side
    438,912.12x = 216,346,531,742.91
  5. Step 5: Solve for x
    x = 216,346,531,742.91/438,912.12
  6. Step 6: Final answer
    x = 492,915.37

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