Home / 919,264.45-1,378,902.78-320,236.93

Finding the Fourth Proportional to 919,264.45, 1,378,902.78 and 320,236.93

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Solution

The fourth proportional to 919,264.45, 1,378,902.78 and 320,236.93 is: 480,357.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,264.45 : 1,378,902.78 = 320,236.93 : x
  2. Step 2: Convert to fraction form
    919,264.45/1,378,902.78 = 320,236.93/x
  3. Step 3: Cross multiply
    919,264.45x = 1,378,902.78 × 320,236.93
  4. Step 4: Simplify right side
    919,264.45x = 441,575,593,035.67
  5. Step 5: Solve for x
    x = 441,575,593,035.67/919,264.45
  6. Step 6: Final answer
    x = 480,357.52

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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.