Home / 1,028,279.95-1,420,504.42-821,276.55

Finding the Fourth Proportional to 1,028,279.95, 1,420,504.42 and 821,276.55

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Solution

The fourth proportional to 1,028,279.95, 1,420,504.42 and 821,276.55 is: 1,134,542.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028,279.95 : 1,420,504.42 = 821,276.55 : x
  2. Step 2: Convert to fraction form
    1,028,279.95/1,420,504.42 = 821,276.55/x
  3. Step 3: Cross multiply
    1,028,279.95x = 1,420,504.42 × 821,276.55
  4. Step 4: Simplify right side
    1,028,279.95x = 1,166,626,969,317.35
  5. Step 5: Solve for x
    x = 1,166,626,969,317.35/1,028,279.95
  6. Step 6: Final answer
    x = 1,134,542.17

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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.