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Finding the Fourth Proportional to 529,455.67, 730,654.45 and 287,738.23

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Solution

The fourth proportional to 529,455.67, 730,654.45 and 287,738.23 is: 397,081.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,455.67 : 730,654.45 = 287,738.23 : x
  2. Step 2: Convert to fraction form
    529,455.67/730,654.45 = 287,738.23/x
  3. Step 3: Cross multiply
    529,455.67x = 730,654.45 × 287,738.23
  4. Step 4: Simplify right side
    529,455.67x = 210,237,218,184.62
  5. Step 5: Solve for x
    x = 210,237,218,184.62/529,455.67
  6. Step 6: Final answer
    x = 397,081.81

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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.