Home / 628,291.25-867,343.07-386,780.84

Finding the Fourth Proportional to 628,291.25, 867,343.07 and 386,780.84

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Solution

The fourth proportional to 628,291.25, 867,343.07 and 386,780.84 is: 533,942.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,291.25 : 867,343.07 = 386,780.84 : x
  2. Step 2: Convert to fraction form
    628,291.25/867,343.07 = 386,780.84/x
  3. Step 3: Cross multiply
    628,291.25x = 867,343.07 × 386,780.84
  4. Step 4: Simplify right side
    628,291.25x = 335,471,674,912.16
  5. Step 5: Solve for x
    x = 335,471,674,912.16/628,291.25
  6. Step 6: Final answer
    x = 533,942.94

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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.