Home / 860,955.61-1,291,390.70-321,169.84

Finding the Fourth Proportional to 860,955.61, 1,291,390.70 and 321,169.84

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Solution

The fourth proportional to 860,955.61, 1,291,390.70 and 321,169.84 is: 481,738.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,955.61 : 1,291,390.70 = 321,169.84 : x
  2. Step 2: Convert to fraction form
    860,955.61/1,291,390.70 = 321,169.84/x
  3. Step 3: Cross multiply
    860,955.61x = 1,291,390.70 × 321,169.84
  4. Step 4: Simplify right side
    860,955.61x = 414,755,744,496.49
  5. Step 5: Solve for x
    x = 414,755,744,496.49/860,955.61
  6. Step 6: Final answer
    x = 481,738.83

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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.