Home / 628,722.48-867,380.76-386,932.08

Finding the Fourth Proportional to 628,722.48, 867,380.76 and 386,932.08

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Solution

The fourth proportional to 628,722.48, 867,380.76 and 386,932.08 is: 533,808.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,722.48 : 867,380.76 = 386,932.08 : x
  2. Step 2: Convert to fraction form
    628,722.48/867,380.76 = 386,932.08/x
  3. Step 3: Cross multiply
    628,722.48x = 867,380.76 × 386,932.08
  4. Step 4: Simplify right side
    628,722.48x = 335,617,441,618.78
  5. Step 5: Solve for x
    x = 335,617,441,618.78/628,722.48
  6. Step 6: Final answer
    x = 533,808.56

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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.