Home / 865,647.36-1,298,062.37-505,921.41

Finding the Fourth Proportional to 865,647.36, 1,298,062.37 and 505,921.41

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Solution

The fourth proportional to 865,647.36, 1,298,062.37 and 505,921.41 is: 758,643.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,647.36 : 1,298,062.37 = 505,921.41 : x
  2. Step 2: Convert to fraction form
    865,647.36/1,298,062.37 = 505,921.41/x
  3. Step 3: Cross multiply
    865,647.36x = 1,298,062.37 × 505,921.41
  4. Step 4: Simplify right side
    865,647.36x = 656,717,541,968.74
  5. Step 5: Solve for x
    x = 656,717,541,968.74/865,647.36
  6. Step 6: Final answer
    x = 758,643.27

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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.