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Finding the Fourth Proportional to 529,698.92, 730,998.92 and 287,997.76

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Solution

The fourth proportional to 529,698.92, 730,998.92 and 287,997.76 is: 397,444.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,698.92 : 730,998.92 = 287,997.76 : x
  2. Step 2: Convert to fraction form
    529,698.92/730,998.92 = 287,997.76/x
  3. Step 3: Cross multiply
    529,698.92x = 730,998.92 × 287,997.76
  4. Step 4: Simplify right side
    529,698.92x = 210,526,051,522.42
  5. Step 5: Solve for x
    x = 210,526,051,522.42/529,698.92
  6. Step 6: Final answer
    x = 397,444.74

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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.