Home / 722,938.80-1,084,408.20-688,724.40

Finding the Fourth Proportional to 722,938.80, 1,084,408.20 and 688,724.40

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Solution

The fourth proportional to 722,938.80, 1,084,408.20 and 688,724.40 is: 1,033,086.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,938.80 : 1,084,408.20 = 688,724.40 : x
  2. Step 2: Convert to fraction form
    722,938.80/1,084,408.20 = 688,724.40/x
  3. Step 3: Cross multiply
    722,938.80x = 1,084,408.20 × 688,724.40
  4. Step 4: Simplify right side
    722,938.80x = 746,858,386,900.08
  5. Step 5: Solve for x
    x = 746,858,386,900.08/722,938.80
  6. Step 6: Final answer
    x = 1,033,086.60

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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.