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Finding the Fourth Proportional to 528,750.88, 729,676.48 and 287,033.36

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Solution

The fourth proportional to 528,750.88, 729,676.48 and 287,033.36 is: 396,106.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,750.88 : 729,676.48 = 287,033.36 : x
  2. Step 2: Convert to fraction form
    528,750.88/729,676.48 = 287,033.36/x
  3. Step 3: Cross multiply
    528,750.88x = 729,676.48 × 287,033.36
  4. Step 4: Simplify right side
    528,750.88x = 209,441,491,767.37
  5. Step 5: Solve for x
    x = 209,441,491,767.37/528,750.88
  6. Step 6: Final answer
    x = 396,106.18

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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.