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Finding the Fourth Proportional to 1,186,067, 1,779,284.82 and 398,283.32

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Solution

The fourth proportional to 1,186,067, 1,779,284.82 and 398,283.32 is: 597,486.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,067 : 1,779,284.82 = 398,283.32 : x
  2. Step 2: Convert to fraction form
    1,186,067/1,779,284.82 = 398,283.32/x
  3. Step 3: Cross multiply
    1,186,067x = 1,779,284.82 × 398,283.32
  4. Step 4: Simplify right side
    1,186,067x = 708,659,465,335.20
  5. Step 5: Solve for x
    x = 708,659,465,335.20/1,186,067
  6. Step 6: Final answer
    x = 597,486.87

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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.