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Finding the Fourth Proportional to 529,591.70, 730,821.02 and 287,868.06

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Solution

The fourth proportional to 529,591.70, 730,821.02 and 287,868.06 is: 397,249.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,591.70 : 730,821.02 = 287,868.06 : x
  2. Step 2: Convert to fraction form
    529,591.70/730,821.02 = 287,868.06/x
  3. Step 3: Cross multiply
    529,591.70x = 730,821.02 × 287,868.06
  4. Step 4: Simplify right side
    529,591.70x = 210,380,027,795.28
  5. Step 5: Solve for x
    x = 210,380,027,795.28/529,591.70
  6. Step 6: Final answer
    x = 397,249.48

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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.