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Finding the Fourth Proportional to 529,454.40, 730,652.78 and 287,741.04

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Solution

The fourth proportional to 529,454.40, 730,652.78 and 287,741.04 is: 397,085.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,454.40 : 730,652.78 = 287,741.04 : x
  2. Step 2: Convert to fraction form
    529,454.40/730,652.78 = 287,741.04/x
  3. Step 3: Cross multiply
    529,454.40x = 730,652.78 × 287,741.04
  4. Step 4: Simplify right side
    529,454.40x = 210,238,790,796.09
  5. Step 5: Solve for x
    x = 210,238,790,796.09/529,454.40
  6. Step 6: Final answer
    x = 397,085.74

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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.