Home / 646,325.06-892,063.80-388,213.29

Finding the Fourth Proportional to 646,325.06, 892,063.80 and 388,213.29

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Solution

The fourth proportional to 646,325.06, 892,063.80 and 388,213.29 is: 535,815.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,325.06 : 892,063.80 = 388,213.29 : x
  2. Step 2: Convert to fraction form
    646,325.06/892,063.80 = 388,213.29/x
  3. Step 3: Cross multiply
    646,325.06x = 892,063.80 × 388,213.29
  4. Step 4: Simplify right side
    646,325.06x = 346,311,022,687.90
  5. Step 5: Solve for x
    x = 346,311,022,687.90/646,325.06
  6. Step 6: Final answer
    x = 535,815.56

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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.