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Finding the Fourth Proportional to 529,523.47, 730,749.80 and 287,805.97

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Solution

The fourth proportional to 529,523.47, 730,749.80 and 287,805.97 is: 397,176.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,523.47 : 730,749.80 = 287,805.97 : x
  2. Step 2: Convert to fraction form
    529,523.47/730,749.80 = 287,805.97/x
  3. Step 3: Cross multiply
    529,523.47x = 730,749.80 × 287,805.97
  4. Step 4: Simplify right side
    529,523.47x = 210,314,155,016.31
  5. Step 5: Solve for x
    x = 210,314,155,016.31/529,523.47
  6. Step 6: Final answer
    x = 397,176.27

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1.5x scale

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.