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Finding the Fourth Proportional to 529,535.10, 730,758.60 and 287,817.74

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Solution

The fourth proportional to 529,535.10, 730,758.60 and 287,817.74 is: 397,188.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,535.10 : 730,758.60 = 287,817.74 : x
  2. Step 2: Convert to fraction form
    529,535.10/730,758.60 = 287,817.74/x
  3. Step 3: Cross multiply
    529,535.10x = 730,758.60 × 287,817.74
  4. Step 4: Simplify right side
    529,535.10x = 210,325,285,083.77
  5. Step 5: Solve for x
    x = 210,325,285,083.77/529,535.10
  6. Step 6: Final answer
    x = 397,188.56

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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.