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Finding the Fourth Proportional to 529,468.80, 730,672.62 and 287,751.40

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Solution

The fourth proportional to 529,468.80, 730,672.62 and 287,751.40 is: 397,100.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,468.80 : 730,672.62 = 287,751.40 : x
  2. Step 2: Convert to fraction form
    529,468.80/730,672.62 = 287,751.40/x
  3. Step 3: Cross multiply
    529,468.80x = 730,672.62 × 287,751.40
  4. Step 4: Simplify right side
    529,468.80x = 210,252,069,346.67
  5. Step 5: Solve for x
    x = 210,252,069,346.67/529,468.80
  6. Step 6: Final answer
    x = 397,100.02

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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.