Home / 644,975.46-890,076.09-354,599.61

Finding the Fourth Proportional to 644,975.46, 890,076.09 and 354,599.61

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Solution

The fourth proportional to 644,975.46, 890,076.09 and 354,599.61 is: 489,352.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,975.46 : 890,076.09 = 354,599.61 : x
  2. Step 2: Convert to fraction form
    644,975.46/890,076.09 = 354,599.61/x
  3. Step 3: Cross multiply
    644,975.46x = 890,076.09 × 354,599.61
  4. Step 4: Simplify right side
    644,975.46x = 315,620,634,384.33
  5. Step 5: Solve for x
    x = 315,620,634,384.33/644,975.46
  6. Step 6: Final answer
    x = 489,352.94

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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.