Home / 1,292,609.40-1,939,204.80-394,141.92

Finding the Fourth Proportional to 1,292,609.40, 1,939,204.80 and 394,141.92

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Solution

The fourth proportional to 1,292,609.40, 1,939,204.80 and 394,141.92 is: 591,301.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,609.40 : 1,939,204.80 = 394,141.92 : x
  2. Step 2: Convert to fraction form
    1,292,609.40/1,939,204.80 = 394,141.92/x
  3. Step 3: Cross multiply
    1,292,609.40x = 1,939,204.80 × 394,141.92
  4. Step 4: Simplify right side
    1,292,609.40x = 764,321,903,145.22
  5. Step 5: Solve for x
    x = 764,321,903,145.22/1,292,609.40
  6. Step 6: Final answer
    x = 591,301.52

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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.