Home / 813,938.40-1,220,907.60-693,669.60

Finding the Fourth Proportional to 813,938.40, 1,220,907.60 and 693,669.60

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Solution

The fourth proportional to 813,938.40, 1,220,907.60 and 693,669.60 is: 1,040,504.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,938.40 : 1,220,907.60 = 693,669.60 : x
  2. Step 2: Convert to fraction form
    813,938.40/1,220,907.60 = 693,669.60/x
  3. Step 3: Cross multiply
    813,938.40x = 1,220,907.60 × 693,669.60
  4. Step 4: Simplify right side
    813,938.40x = 846,906,486,528.96
  5. Step 5: Solve for x
    x = 846,906,486,528.96/813,938.40
  6. Step 6: Final answer
    x = 1,040,504.40

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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.