Home / 792,638.40-1,189,735.20-393,729.60

Finding the Fourth Proportional to 792,638.40, 1,189,735.20 and 393,729.60

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Solution

The fourth proportional to 792,638.40, 1,189,735.20 and 393,729.60 is: 590,980.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,638.40 : 1,189,735.20 = 393,729.60 : x
  2. Step 2: Convert to fraction form
    792,638.40/1,189,735.20 = 393,729.60/x
  3. Step 3: Cross multiply
    792,638.40x = 1,189,735.20 × 393,729.60
  4. Step 4: Simplify right side
    792,638.40x = 468,433,964,401.92
  5. Step 5: Solve for x
    x = 468,433,964,401.92/792,638.40
  6. Step 6: Final answer
    x = 590,980.66

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1.5x scale

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.