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Finding the Fourth Proportional to 646,793,906.80, 970,190,860.20 and 186,747,084.40

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Solution

The fourth proportional to 646,793,906.80, 970,190,860.20 and 186,747,084.40 is: 280,120,626.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,793,906.80 : 970,190,860.20 = 186,747,084.40 : x
  2. Step 2: Convert to fraction form
    646,793,906.80/970,190,860.20 = 186,747,084.40/x
  3. Step 3: Cross multiply
    646,793,906.80x = 970,190,860.20 × 186,747,084.40
  4. Step 4: Simplify right side
    646,793,906.80x = 181,180,314,453,878,016
  5. Step 5: Solve for x
    x = 181,180,314,453,878,016/646,793,906.80
  6. Step 6: Final answer
    x = 280,120,626.60

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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.