Home / 628,470.91-867,309.46-356,550.26

Finding the Fourth Proportional to 628,470.91, 867,309.46 and 356,550.26

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Solution

The fourth proportional to 628,470.91, 867,309.46 and 356,550.26 is: 492,050.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,470.91 : 867,309.46 = 356,550.26 : x
  2. Step 2: Convert to fraction form
    628,470.91/867,309.46 = 356,550.26/x
  3. Step 3: Cross multiply
    628,470.91x = 867,309.46 × 356,550.26
  4. Step 4: Simplify right side
    628,470.91x = 309,239,414,740.36
  5. Step 5: Solve for x
    x = 309,239,414,740.36/628,470.91
  6. Step 6: Final answer
    x = 492,050.48

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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.