Home / 1,805,129.78-2,491,098.59-989,315.90

Finding the Fourth Proportional to 1,805,129.78, 2,491,098.59 and 989,315.90

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Solution

The fourth proportional to 1,805,129.78, 2,491,098.59 and 989,315.90 is: 1,365,266.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805,129.78 : 2,491,098.59 = 989,315.90 : x
  2. Step 2: Convert to fraction form
    1,805,129.78/2,491,098.59 = 989,315.90/x
  3. Step 3: Cross multiply
    1,805,129.78x = 2,491,098.59 × 989,315.90
  4. Step 4: Simplify right side
    1,805,129.78x = 2,464,483,443,554.58
  5. Step 5: Solve for x
    x = 2,464,483,443,554.58/1,805,129.78
  6. Step 6: Final answer
    x = 1,365,266.63

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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.