Home / 554,450.08-765,137.32-312,734.60

Finding the Fourth Proportional to 554,450.08, 765,137.32 and 312,734.60

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Solution

The fourth proportional to 554,450.08, 765,137.32 and 312,734.60 is: 431,571.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,450.08 : 765,137.32 = 312,734.60 : x
  2. Step 2: Convert to fraction form
    554,450.08/765,137.32 = 312,734.60/x
  3. Step 3: Cross multiply
    554,450.08x = 765,137.32 × 312,734.60
  4. Step 4: Simplify right side
    554,450.08x = 239,284,913,715.27
  5. Step 5: Solve for x
    x = 239,284,913,715.27/554,450.08
  6. Step 6: Final answer
    x = 431,571.61

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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.