Home / 900,707.88-1,242,992.44-492,845.36

Finding the Fourth Proportional to 900,707.88, 1,242,992.44 and 492,845.36

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Solution

The fourth proportional to 900,707.88, 1,242,992.44 and 492,845.36 is: 680,135.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,707.88 : 1,242,992.44 = 492,845.36 : x
  2. Step 2: Convert to fraction form
    900,707.88/1,242,992.44 = 492,845.36/x
  3. Step 3: Cross multiply
    900,707.88x = 1,242,992.44 × 492,845.36
  4. Step 4: Simplify right side
    900,707.88x = 612,603,055,189.75
  5. Step 5: Solve for x
    x = 612,603,055,189.75/900,707.88
  6. Step 6: Final answer
    x = 680,135.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.