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Finding the Fourth Proportional to 529,474.56, 730,680.54 and 287,757.15

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Solution

The fourth proportional to 529,474.56, 730,680.54 and 287,757.15 is: 397,107.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,474.56 : 730,680.54 = 287,757.15 : x
  2. Step 2: Convert to fraction form
    529,474.56/730,680.54 = 287,757.15/x
  3. Step 3: Cross multiply
    529,474.56x = 730,680.54 × 287,757.15
  4. Step 4: Simplify right side
    529,474.56x = 210,258,547,550.35
  5. Step 5: Solve for x
    x = 210,258,547,550.35/529,474.56
  6. Step 6: Final answer
    x = 397,107.93

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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.