Home / 1,380,834.68-1,906,141.02-928,388.12

Finding the Fourth Proportional to 1,380,834.68, 1,906,141.02 and 928,388.12

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Solution

The fourth proportional to 1,380,834.68, 1,906,141.02 and 928,388.12 is: 1,281,571.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,834.68 : 1,906,141.02 = 928,388.12 : x
  2. Step 2: Convert to fraction form
    1,380,834.68/1,906,141.02 = 928,388.12/x
  3. Step 3: Cross multiply
    1,380,834.68x = 1,906,141.02 × 928,388.12
  4. Step 4: Simplify right side
    1,380,834.68x = 1,769,638,678,012.68
  5. Step 5: Solve for x
    x = 1,769,638,678,012.68/1,380,834.68
  6. Step 6: Final answer
    x = 1,281,571.72

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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.