Home / 811,704.96-1,120,603.32-489,496.68

Finding the Fourth Proportional to 811,704.96, 1,120,603.32 and 489,496.68

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Solution

The fourth proportional to 811,704.96, 1,120,603.32 and 489,496.68 is: 675,777.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,704.96 : 1,120,603.32 = 489,496.68 : x
  2. Step 2: Convert to fraction form
    811,704.96/1,120,603.32 = 489,496.68/x
  3. Step 3: Cross multiply
    811,704.96x = 1,120,603.32 × 489,496.68
  4. Step 4: Simplify right side
    811,704.96x = 548,531,604,736.98
  5. Step 5: Solve for x
    x = 548,531,604,736.98/811,704.96
  6. Step 6: Final answer
    x = 675,777.08

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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.