Home / 743,399.88-1,115,243.34-316,928.50

Finding the Fourth Proportional to 743,399.88, 1,115,243.34 and 316,928.50

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Solution

The fourth proportional to 743,399.88, 1,115,243.34 and 316,928.50 is: 475,453.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,399.88 : 1,115,243.34 = 316,928.50 : x
  2. Step 2: Convert to fraction form
    743,399.88/1,115,243.34 = 316,928.50/x
  3. Step 3: Cross multiply
    743,399.88x = 1,115,243.34 × 316,928.50
  4. Step 4: Simplify right side
    743,399.88x = 353,452,394,904.60
  5. Step 5: Solve for x
    x = 353,452,394,904.60/743,399.88
  6. Step 6: Final answer
    x = 475,453.93

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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.