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Finding the Fourth Proportional to 628,399.40, 867,254.99 and 370,359.42

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Solution

The fourth proportional to 628,399.40, 867,254.99 and 370,359.42 is: 511,133.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,399.40 : 867,254.99 = 370,359.42 : x
  2. Step 2: Convert to fraction form
    628,399.40/867,254.99 = 370,359.42/x
  3. Step 3: Cross multiply
    628,399.40x = 867,254.99 × 370,359.42
  4. Step 4: Simplify right side
    628,399.40x = 321,196,053,236.71
  5. Step 5: Solve for x
    x = 321,196,053,236.71/628,399.40
  6. Step 6: Final answer
    x = 511,133.61

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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.