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Finding the Fourth Proportional to 529,008.80, 793,513.20 and 521,135.60

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Solution

The fourth proportional to 529,008.80, 793,513.20 and 521,135.60 is: 781,703.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,008.80 : 793,513.20 = 521,135.60 : x
  2. Step 2: Convert to fraction form
    529,008.80/793,513.20 = 521,135.60/x
  3. Step 3: Cross multiply
    529,008.80x = 793,513.20 × 521,135.60
  4. Step 4: Simplify right side
    529,008.80x = 413,527,977,589.92
  5. Step 5: Solve for x
    x = 413,527,977,589.92/529,008.80
  6. Step 6: Final answer
    x = 781,703.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.