Home / 628,606.97-867,477.63-342,129.14

Finding the Fourth Proportional to 628,606.97, 867,477.63 and 342,129.14

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Solution

The fourth proportional to 628,606.97, 867,477.63 and 342,129.14 is: 472,138.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,606.97 : 867,477.63 = 342,129.14 : x
  2. Step 2: Convert to fraction form
    628,606.97/867,477.63 = 342,129.14/x
  3. Step 3: Cross multiply
    628,606.97x = 867,477.63 × 342,129.14
  4. Step 4: Simplify right side
    628,606.97x = 296,789,375,521.14
  5. Step 5: Solve for x
    x = 296,789,375,521.14/628,606.97
  6. Step 6: Final answer
    x = 472,138.22

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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.