Home / 891,422.55-1,335,729.29-689,512.23

Finding the Fourth Proportional to 891,422.55, 1,335,729.29 and 689,512.23

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Solution

The fourth proportional to 891,422.55, 1,335,729.29 and 689,512.23 is: 1,033,181.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,422.55 : 1,335,729.29 = 689,512.23 : x
  2. Step 2: Convert to fraction form
    891,422.55/1,335,729.29 = 689,512.23/x
  3. Step 3: Cross multiply
    891,422.55x = 1,335,729.29 × 689,512.23
  4. Step 4: Simplify right side
    891,422.55x = 921,001,677,976.66
  5. Step 5: Solve for x
    x = 921,001,677,976.66/891,422.55
  6. Step 6: Final answer
    x = 1,033,181.94

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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.