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Finding the Fourth Proportional to 628,299.32, 867,231.34 and 370,326.20

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Solution

The fourth proportional to 628,299.32, 867,231.34 and 370,326.20 is: 511,155.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,299.32 : 867,231.34 = 370,326.20 : x
  2. Step 2: Convert to fraction form
    628,299.32/867,231.34 = 370,326.20/x
  3. Step 3: Cross multiply
    628,299.32x = 867,231.34 × 370,326.20
  4. Step 4: Simplify right side
    628,299.32x = 321,158,486,663.11
  5. Step 5: Solve for x
    x = 321,158,486,663.11/628,299.32
  6. Step 6: Final answer
    x = 511,155.24

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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.