Home / 628,530.81-867,392.19-356,610.15

Finding the Fourth Proportional to 628,530.81, 867,392.19 and 356,610.15

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Solution

The fourth proportional to 628,530.81, 867,392.19 and 356,610.15 is: 492,133.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,530.81 : 867,392.19 = 356,610.15 : x
  2. Step 2: Convert to fraction form
    628,530.81/867,392.19 = 356,610.15/x
  3. Step 3: Cross multiply
    628,530.81x = 867,392.19 × 356,610.15
  4. Step 4: Simplify right side
    628,530.81x = 309,320,858,984.73
  5. Step 5: Solve for x
    x = 309,320,858,984.73/628,530.81
  6. Step 6: Final answer
    x = 492,133.17

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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.