Home / 878,249.59-1,211,986.40-491,079.00

Finding the Fourth Proportional to 878,249.59, 1,211,986.40 and 491,079.00

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Solution

The fourth proportional to 878,249.59, 1,211,986.40 and 491,079.00 is: 677,690.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,249.59 : 1,211,986.40 = 491,079.00 : x
  2. Step 2: Convert to fraction form
    878,249.59/1,211,986.40 = 491,079.00/x
  3. Step 3: Cross multiply
    878,249.59x = 1,211,986.40 × 491,079.00
  4. Step 4: Simplify right side
    878,249.59x = 595,181,071,415.15
  5. Step 5: Solve for x
    x = 595,181,071,415.15/878,249.59
  6. Step 6: Final answer
    x = 677,690.12

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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.