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Finding the Fourth Proportional to 529,548.96, 730,778.50 and 287,830.88

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Solution

The fourth proportional to 529,548.96, 730,778.50 and 287,830.88 is: 397,207.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,548.96 : 730,778.50 = 287,830.88 : x
  2. Step 2: Convert to fraction form
    529,548.96/730,778.50 = 287,830.88/x
  3. Step 3: Cross multiply
    529,548.96x = 730,778.50 × 287,830.88
  4. Step 4: Simplify right side
    529,548.96x = 210,340,618,740.08
  5. Step 5: Solve for x
    x = 210,340,618,740.08/529,548.96
  6. Step 6: Final answer
    x = 397,207.12

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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.