Home / 646,200,618.40-969,300,927.60-388,211,600.80

Finding the Fourth Proportional to 646,200,618.40, 969,300,927.60 and 388,211,600.80

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Solution

The fourth proportional to 646,200,618.40, 969,300,927.60 and 388,211,600.80 is: 582,317,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,200,618.40 : 969,300,927.60 = 388,211,600.80 : x
  2. Step 2: Convert to fraction form
    646,200,618.40/969,300,927.60 = 388,211,600.80/x
  3. Step 3: Cross multiply
    646,200,618.40x = 969,300,927.60 × 388,211,600.80
  4. Step 4: Simplify right side
    646,200,618.40x = 376,293,864,760,520,896
  5. Step 5: Solve for x
    x = 376,293,864,760,520,896/646,200,618.40
  6. Step 6: Final answer
    x = 582,317,401.20

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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.