Home / 1,511,464.40-2,085,823.08-823,137.72

Finding the Fourth Proportional to 1,511,464.40, 2,085,823.08 and 823,137.72

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Solution

The fourth proportional to 1,511,464.40, 2,085,823.08 and 823,137.72 is: 1,135,931.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511,464.40 : 2,085,823.08 = 823,137.72 : x
  2. Step 2: Convert to fraction form
    1,511,464.40/2,085,823.08 = 823,137.72/x
  3. Step 3: Cross multiply
    1,511,464.40x = 2,085,823.08 × 823,137.72
  4. Step 4: Simplify right side
    1,511,464.40x = 1,716,919,654,394.58
  5. Step 5: Solve for x
    x = 1,716,919,654,394.58/1,511,464.40
  6. Step 6: Final answer
    x = 1,135,931.26

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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.