Home / 860,821.29-1,187,912.39-498,194.82

Finding the Fourth Proportional to 860,821.29, 1,187,912.39 and 498,194.82

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Solution

The fourth proportional to 860,821.29, 1,187,912.39 and 498,194.82 is: 687,496.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,821.29 : 1,187,912.39 = 498,194.82 : x
  2. Step 2: Convert to fraction form
    860,821.29/1,187,912.39 = 498,194.82/x
  3. Step 3: Cross multiply
    860,821.29x = 1,187,912.39 × 498,194.82
  4. Step 4: Simplify right side
    860,821.29x = 591,811,796,820.85
  5. Step 5: Solve for x
    x = 591,811,796,820.85/860,821.29
  6. Step 6: Final answer
    x = 687,496.70

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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.