Home / 1,427,745.74-1,970,289.12-783,167.47

Finding the Fourth Proportional to 1,427,745.74, 1,970,289.12 and 783,167.47

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Solution

The fourth proportional to 1,427,745.74, 1,970,289.12 and 783,167.47 is: 1,080,771.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427,745.74 : 1,970,289.12 = 783,167.47 : x
  2. Step 2: Convert to fraction form
    1,427,745.74/1,970,289.12 = 783,167.47/x
  3. Step 3: Cross multiply
    1,427,745.74x = 1,970,289.12 × 783,167.47
  4. Step 4: Simplify right side
    1,427,745.74x = 1,543,066,331,511.64
  5. Step 5: Solve for x
    x = 1,543,066,331,511.64/1,427,745.74
  6. Step 6: Final answer
    x = 1,080,771.10

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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.