Home / 919,266.45-1,378,905.78-320,238.93

Finding the Fourth Proportional to 919,266.45, 1,378,905.78 and 320,238.93

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Solution

The fourth proportional to 919,266.45, 1,378,905.78 and 320,238.93 is: 480,360.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,266.45 : 1,378,905.78 = 320,238.93 : x
  2. Step 2: Convert to fraction form
    919,266.45/1,378,905.78 = 320,238.93/x
  3. Step 3: Cross multiply
    919,266.45x = 1,378,905.78 × 320,238.93
  4. Step 4: Simplify right side
    919,266.45x = 441,579,311,558.02
  5. Step 5: Solve for x
    x = 441,579,311,558.02/919,266.45
  6. Step 6: Final answer
    x = 480,360.52

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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.