Home / 891,659.40-1,230,489.86-509,694.36

Finding the Fourth Proportional to 891,659.40, 1,230,489.86 and 509,694.36

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Solution

The fourth proportional to 891,659.40, 1,230,489.86 and 509,694.36 is: 703,378.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,659.40 : 1,230,489.86 = 509,694.36 : x
  2. Step 2: Convert to fraction form
    891,659.40/1,230,489.86 = 509,694.36/x
  3. Step 3: Cross multiply
    891,659.40x = 1,230,489.86 × 509,694.36
  4. Step 4: Simplify right side
    891,659.40x = 627,173,741,679.19
  5. Step 5: Solve for x
    x = 627,173,741,679.19/891,659.40
  6. Step 6: Final answer
    x = 703,378.15

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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.