Home / 628,588.72-867,470.87-342,127.36

Finding the Fourth Proportional to 628,588.72, 867,470.87 and 342,127.36

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Solution

The fourth proportional to 628,588.72, 867,470.87 and 342,127.36 is: 472,145.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,588.72 : 867,470.87 = 342,127.36 : x
  2. Step 2: Convert to fraction form
    628,588.72/867,470.87 = 342,127.36/x
  3. Step 3: Cross multiply
    628,588.72x = 867,470.87 × 342,127.36
  4. Step 4: Simplify right side
    628,588.72x = 296,785,512,582.01
  5. Step 5: Solve for x
    x = 296,785,512,582.01/628,588.72
  6. Step 6: Final answer
    x = 472,145.79

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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.