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Finding the Fourth Proportional to 529,370.02, 730,529.21 and 287,652.58

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Solution

The fourth proportional to 529,370.02, 730,529.21 and 287,652.58 is: 396,959.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,370.02 : 730,529.21 = 287,652.58 : x
  2. Step 2: Convert to fraction form
    529,370.02/730,529.21 = 287,652.58/x
  3. Step 3: Cross multiply
    529,370.02x = 730,529.21 × 287,652.58
  4. Step 4: Simplify right side
    529,370.02x = 210,138,612,021.86
  5. Step 5: Solve for x
    x = 210,138,612,021.86/529,370.02
  6. Step 6: Final answer
    x = 396,959.79

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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.