Home / 1,280,317.52-1,766,057.36-821,277.56

Finding the Fourth Proportional to 1,280,317.52, 1,766,057.36 and 821,277.56

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Solution

The fourth proportional to 1,280,317.52, 1,766,057.36 and 821,277.56 is: 1,132,862.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,317.52 : 1,766,057.36 = 821,277.56 : x
  2. Step 2: Convert to fraction form
    1,280,317.52/1,766,057.36 = 821,277.56/x
  3. Step 3: Cross multiply
    1,280,317.52x = 1,766,057.36 × 821,277.56
  4. Step 4: Simplify right side
    1,280,317.52x = 1,450,423,279,440.84
  5. Step 5: Solve for x
    x = 1,450,423,279,440.84/1,280,317.52
  6. Step 6: Final answer
    x = 1,132,862.17

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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.