Home / 891,910.77-1,230,837.69-509,945.55

Finding the Fourth Proportional to 891,910.77, 1,230,837.69 and 509,945.55

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Solution

The fourth proportional to 891,910.77, 1,230,837.69 and 509,945.55 is: 703,725.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,910.77 : 1,230,837.69 = 509,945.55 : x
  2. Step 2: Convert to fraction form
    891,910.77/1,230,837.69 = 509,945.55/x
  3. Step 3: Cross multiply
    891,910.77x = 1,230,837.69 × 509,945.55
  4. Step 4: Simplify right side
    891,910.77x = 627,660,202,787.78
  5. Step 5: Solve for x
    x = 627,660,202,787.78/891,910.77
  6. Step 6: Final answer
    x = 703,725.33

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1.5x scale

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.