Home / 1,242,679.90-1,714,908.21-691,403.57

Finding the Fourth Proportional to 1,242,679.90, 1,714,908.21 and 691,403.57

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Solution

The fourth proportional to 1,242,679.90, 1,714,908.21 and 691,403.57 is: 954,142.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,679.90 : 1,714,908.21 = 691,403.57 : x
  2. Step 2: Convert to fraction form
    1,242,679.90/1,714,908.21 = 691,403.57/x
  3. Step 3: Cross multiply
    1,242,679.90x = 1,714,908.21 × 691,403.57
  4. Step 4: Simplify right side
    1,242,679.90x = 1,185,693,658,616.31
  5. Step 5: Solve for x
    x = 1,185,693,658,616.31/1,242,679.90
  6. Step 6: Final answer
    x = 954,142.47

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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.