Home / 1,131,491.91-1,698,353.28-831,129.33

Finding the Fourth Proportional to 1,131,491.91, 1,698,353.28 and 831,129.33

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Solution

The fourth proportional to 1,131,491.91, 1,698,353.28 and 831,129.33 is: 1,247,513.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,491.91 : 1,698,353.28 = 831,129.33 : x
  2. Step 2: Convert to fraction form
    1,131,491.91/1,698,353.28 = 831,129.33/x
  3. Step 3: Cross multiply
    1,131,491.91x = 1,698,353.28 × 831,129.33
  4. Step 4: Simplify right side
    1,131,491.91x = 1,411,551,223,709.70
  5. Step 5: Solve for x
    x = 1,411,551,223,709.70/1,131,491.91
  6. Step 6: Final answer
    x = 1,247,513.32

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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.