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Finding the Fourth Proportional to 501,718.23, 692,081.64 and 320,225.63

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Solution

The fourth proportional to 501,718.23, 692,081.64 and 320,225.63 is: 441,726.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,718.23 : 692,081.64 = 320,225.63 : x
  2. Step 2: Convert to fraction form
    501,718.23/692,081.64 = 320,225.63/x
  3. Step 3: Cross multiply
    501,718.23x = 692,081.64 × 320,225.63
  4. Step 4: Simplify right side
    501,718.23x = 221,622,275,720.03
  5. Step 5: Solve for x
    x = 221,622,275,720.03/501,718.23
  6. Step 6: Final answer
    x = 441,726.58

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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.