Home / 919,151.11-1,378,763.75-320,172.85

Finding the Fourth Proportional to 919,151.11, 1,378,763.75 and 320,172.85

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Solution

The fourth proportional to 919,151.11, 1,378,763.75 and 320,172.85 is: 480,272.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,151.11 : 1,378,763.75 = 320,172.85 : x
  2. Step 2: Convert to fraction form
    919,151.11/1,378,763.75 = 320,172.85/x
  3. Step 3: Cross multiply
    919,151.11x = 1,378,763.75 × 320,172.85
  4. Step 4: Simplify right side
    919,151.11x = 441,442,719,314.19
  5. Step 5: Solve for x
    x = 441,442,719,314.19/919,151.11
  6. Step 6: Final answer
    x = 480,272.19

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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.