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Finding the Fourth Proportional to 529,763.80, 794,645.70 and 489,328.60

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Solution

The fourth proportional to 529,763.80, 794,645.70 and 489,328.60 is: 733,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,763.80 : 794,645.70 = 489,328.60 : x
  2. Step 2: Convert to fraction form
    529,763.80/794,645.70 = 489,328.60/x
  3. Step 3: Cross multiply
    529,763.80x = 794,645.70 × 489,328.60
  4. Step 4: Simplify right side
    529,763.80x = 388,842,867,877.02
  5. Step 5: Solve for x
    x = 388,842,867,877.02/529,763.80
  6. Step 6: Final answer
    x = 733,992.90

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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.