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Finding the Fourth Proportional to 528,745.95, 729,673.69 and 293,003.77

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Solution

The fourth proportional to 528,745.95, 729,673.69 and 293,003.77 is: 404,347.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,745.95 : 729,673.69 = 293,003.77 : x
  2. Step 2: Convert to fraction form
    528,745.95/729,673.69 = 293,003.77/x
  3. Step 3: Cross multiply
    528,745.95x = 729,673.69 × 293,003.77
  4. Step 4: Simplify right side
    528,745.95x = 213,797,138,391.44
  5. Step 5: Solve for x
    x = 213,797,138,391.44/528,745.95
  6. Step 6: Final answer
    x = 404,347.57

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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.