Home / 919,621.27-1,379,439.59-320,581.47

Finding the Fourth Proportional to 919,621.27, 1,379,439.59 and 320,581.47

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Solution

The fourth proportional to 919,621.27, 1,379,439.59 and 320,581.47 is: 480,874.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,621.27 : 1,379,439.59 = 320,581.47 : x
  2. Step 2: Convert to fraction form
    919,621.27/1,379,439.59 = 320,581.47/x
  3. Step 3: Cross multiply
    919,621.27x = 1,379,439.59 × 320,581.47
  4. Step 4: Simplify right side
    919,621.27x = 442,222,773,933.62
  5. Step 5: Solve for x
    x = 442,222,773,933.62/919,621.27
  6. Step 6: Final answer
    x = 480,874.88

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1.5x scale

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.