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Finding the Fourth Proportional to 559,093.80, 838,640.70 and 489,109.80

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Solution

The fourth proportional to 559,093.80, 838,640.70 and 489,109.80 is: 733,664.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,093.80 : 838,640.70 = 489,109.80 : x
  2. Step 2: Convert to fraction form
    559,093.80/838,640.70 = 489,109.80/x
  3. Step 3: Cross multiply
    559,093.80x = 838,640.70 × 489,109.80
  4. Step 4: Simplify right side
    559,093.80x = 410,187,385,048.86
  5. Step 5: Solve for x
    x = 410,187,385,048.86/559,093.80
  6. Step 6: Final answer
    x = 733,664.70

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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.