Home / 528,936.08-729,929.48-287,216.69

Finding the Fourth Proportional to 528,936.08, 729,929.48 and 287,216.69

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Solution

The fourth proportional to 528,936.08, 729,929.48 and 287,216.69 is: 396,357.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,936.08 : 729,929.48 = 287,216.69 : x
  2. Step 2: Convert to fraction form
    528,936.08/729,929.48 = 287,216.69/x
  3. Step 3: Cross multiply
    528,936.08x = 729,929.48 × 287,216.69
  4. Step 4: Simplify right side
    528,936.08x = 209,647,924,093.29
  5. Step 5: Solve for x
    x = 209,647,924,093.29/528,936.08
  6. Step 6: Final answer
    x = 396,357.77

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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.