Home / 1,268,039.07-1,902,272.45-426,390.75

Finding the Fourth Proportional to 1,268,039.07, 1,902,272.45 and 426,390.75

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Solution

The fourth proportional to 1,268,039.07, 1,902,272.45 and 426,390.75 is: 639,658.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,039.07 : 1,902,272.45 = 426,390.75 : x
  2. Step 2: Convert to fraction form
    1,268,039.07/1,902,272.45 = 426,390.75/x
  3. Step 3: Cross multiply
    1,268,039.07x = 1,902,272.45 × 426,390.75
  4. Step 4: Simplify right side
    1,268,039.07x = 811,111,374,527.88
  5. Step 5: Solve for x
    x = 811,111,374,527.88/1,268,039.07
  6. Step 6: Final answer
    x = 639,658.03

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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.