Home / 878,164.30-1,211,422.79-587,788.21

Finding the Fourth Proportional to 878,164.30, 1,211,422.79 and 587,788.21

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Solution

The fourth proportional to 878,164.30, 1,211,422.79 and 587,788.21 is: 810,850.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,164.30 : 1,211,422.79 = 587,788.21 : x
  2. Step 2: Convert to fraction form
    878,164.30/1,211,422.79 = 587,788.21/x
  3. Step 3: Cross multiply
    878,164.30x = 1,211,422.79 × 587,788.21
  4. Step 4: Simplify right side
    878,164.30x = 712,060,032,964.75
  5. Step 5: Solve for x
    x = 712,060,032,964.75/878,164.30
  6. Step 6: Final answer
    x = 810,850.58

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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.