Home / 919,871.32-1,380,036.62-320,841.09

Finding the Fourth Proportional to 919,871.32, 1,380,036.62 and 320,841.09

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Solution

The fourth proportional to 919,871.32, 1,380,036.62 and 320,841.09 is: 481,341.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,871.32 : 1,380,036.62 = 320,841.09 : x
  2. Step 2: Convert to fraction form
    919,871.32/1,380,036.62 = 320,841.09/x
  3. Step 3: Cross multiply
    919,871.32x = 1,380,036.62 × 320,841.09
  4. Step 4: Simplify right side
    919,871.32x = 442,772,453,400.72
  5. Step 5: Solve for x
    x = 442,772,453,400.72/919,871.32
  6. Step 6: Final answer
    x = 481,341.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.