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Finding the Fourth Proportional to 529,289.34, 730,410.31 and 287,575.72

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Solution

The fourth proportional to 529,289.34, 730,410.31 and 287,575.72 is: 396,849.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,289.34 : 730,410.31 = 287,575.72 : x
  2. Step 2: Convert to fraction form
    529,289.34/730,410.31 = 287,575.72/x
  3. Step 3: Cross multiply
    529,289.34x = 730,410.31 × 287,575.72
  4. Step 4: Simplify right side
    529,289.34x = 210,048,269,327.12
  5. Step 5: Solve for x
    x = 210,048,269,327.12/529,289.34
  6. Step 6: Final answer
    x = 396,849.62

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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.