Home / 528,944.67-729,945.12-287,231.28

Finding the Fourth Proportional to 528,944.67, 729,945.12 and 287,231.28

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Solution

The fourth proportional to 528,944.67, 729,945.12 and 287,231.28 is: 396,379.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,944.67 : 729,945.12 = 287,231.28 : x
  2. Step 2: Convert to fraction form
    528,944.67/729,945.12 = 287,231.28/x
  3. Step 3: Cross multiply
    528,944.67x = 729,945.12 × 287,231.28
  4. Step 4: Simplify right side
    528,944.67x = 209,663,071,147.35
  5. Step 5: Solve for x
    x = 209,663,071,147.35/528,944.67
  6. Step 6: Final answer
    x = 396,379.97

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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.