Home / 939,801.80-1,409,932.34-300,105.69

Finding the Fourth Proportional to 939,801.80, 1,409,932.34 and 300,105.69

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Solution

The fourth proportional to 939,801.80, 1,409,932.34 and 300,105.69 is: 450,231.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,801.80 : 1,409,932.34 = 300,105.69 : x
  2. Step 2: Convert to fraction form
    939,801.80/1,409,932.34 = 300,105.69/x
  3. Step 3: Cross multiply
    939,801.80x = 1,409,932.34 × 300,105.69
  4. Step 4: Simplify right side
    939,801.80x = 423,128,717,749.02
  5. Step 5: Solve for x
    x = 423,128,717,749.02/939,801.80
  6. Step 6: Final answer
    x = 450,231.87

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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.