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Finding the Fourth Proportional to 528,883.22, 729,854.34 and 287,161.04

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Solution

The fourth proportional to 528,883.22, 729,854.34 and 287,161.04 is: 396,279.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,883.22 : 729,854.34 = 287,161.04 : x
  2. Step 2: Convert to fraction form
    528,883.22/729,854.34 = 287,161.04/x
  3. Step 3: Cross multiply
    528,883.22x = 729,854.34 × 287,161.04
  4. Step 4: Simplify right side
    528,883.22x = 209,585,731,322.91
  5. Step 5: Solve for x
    x = 209,585,731,322.91/528,883.22
  6. Step 6: Final answer
    x = 396,279.79

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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.