Home / 816,920.40-1,222,961.40-607,486.80

Finding the Fourth Proportional to 816,920.40, 1,222,961.40 and 607,486.80

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Solution

The fourth proportional to 816,920.40, 1,222,961.40 and 607,486.80 is: 909,431.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,920.40 : 1,222,961.40 = 607,486.80 : x
  2. Step 2: Convert to fraction form
    816,920.40/1,222,961.40 = 607,486.80/x
  3. Step 3: Cross multiply
    816,920.40x = 1,222,961.40 × 607,486.80
  4. Step 4: Simplify right side
    816,920.40x = 742,932,907,409.52
  5. Step 5: Solve for x
    x = 742,932,907,409.52/816,920.40
  6. Step 6: Final answer
    x = 909,431.21

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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.