Home / 919,150.60-1,378,763-320,172.34

Finding the Fourth Proportional to 919,150.60, 1,378,763 and 320,172.34

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Solution

The fourth proportional to 919,150.60, 1,378,763 and 320,172.34 is: 480,271.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,150.60 : 1,378,763 = 320,172.34 : x
  2. Step 2: Convert to fraction form
    919,150.60/1,378,763 = 320,172.34/x
  3. Step 3: Cross multiply
    919,150.60x = 1,378,763 × 320,172.34
  4. Step 4: Simplify right side
    919,150.60x = 441,441,776,015.42
  5. Step 5: Solve for x
    x = 441,441,776,015.42/919,150.60
  6. Step 6: Final answer
    x = 480,271.43

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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.