Home / 628,680.89-867,555.50-356,732.57

Finding the Fourth Proportional to 628,680.89, 867,555.50 and 356,732.57

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Solution

The fourth proportional to 628,680.89, 867,555.50 and 356,732.57 is: 492,277.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,680.89 : 867,555.50 = 356,732.57 : x
  2. Step 2: Convert to fraction form
    628,680.89/867,555.50 = 356,732.57/x
  3. Step 3: Cross multiply
    628,680.89x = 867,555.50 × 356,732.57
  4. Step 4: Simplify right side
    628,680.89x = 309,485,303,517.86
  5. Step 5: Solve for x
    x = 309,485,303,517.86/628,680.89
  6. Step 6: Final answer
    x = 492,277.25

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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.