Home / 490,085,564.40-735,128,346.60-379,120,683.60

Finding the Fourth Proportional to 490,085,564.40, 735,128,346.60 and 379,120,683.60

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Solution

The fourth proportional to 490,085,564.40, 735,128,346.60 and 379,120,683.60 is: 568,681,025.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,085,564.40 : 735,128,346.60 = 379,120,683.60 : x
  2. Step 2: Convert to fraction form
    490,085,564.40/735,128,346.60 = 379,120,683.60/x
  3. Step 3: Cross multiply
    490,085,564.40x = 735,128,346.60 × 379,120,683.60
  4. Step 4: Simplify right side
    490,085,564.40x = 278,702,361,296,729,760
  5. Step 5: Solve for x
    x = 278,702,361,296,729,760/490,085,564.40
  6. Step 6: Final answer
    x = 568,681,025.40

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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.