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Finding the Fourth Proportional to 582,643.28, 804,069.44 and 321,009.22

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Solution

The fourth proportional to 582,643.28, 804,069.44 and 321,009.22 is: 443,004.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,643.28 : 804,069.44 = 321,009.22 : x
  2. Step 2: Convert to fraction form
    582,643.28/804,069.44 = 321,009.22/x
  3. Step 3: Cross multiply
    582,643.28x = 804,069.44 × 321,009.22
  4. Step 4: Simplify right side
    582,643.28x = 258,113,702,552.59
  5. Step 5: Solve for x
    x = 258,113,702,552.59/582,643.28
  6. Step 6: Final answer
    x = 443,004.68

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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.