Home / 628,289.82-867,218.22-370,316.70

Finding the Fourth Proportional to 628,289.82, 867,218.22 and 370,316.70

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Solution

The fourth proportional to 628,289.82, 867,218.22 and 370,316.70 is: 511,142.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,289.82 : 867,218.22 = 370,316.70 : x
  2. Step 2: Convert to fraction form
    628,289.82/867,218.22 = 370,316.70/x
  3. Step 3: Cross multiply
    628,289.82x = 867,218.22 × 370,316.70
  4. Step 4: Simplify right side
    628,289.82x = 321,145,389,410.27
  5. Step 5: Solve for x
    x = 321,145,389,410.27/628,289.82
  6. Step 6: Final answer
    x = 511,142.12

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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.