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Finding the Fourth Proportional to 860,959,664.20, 1,207,639,355 and 860,959,664.20

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Solution

The fourth proportional to 860,959,664.20, 1,207,639,355 and 860,959,664.20 is: 1,207,639,355

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,959,664.20 : 1,207,639,355 = 860,959,664.20 : x
  2. Step 2: Convert to fraction form
    860,959,664.20/1,207,639,355 = 860,959,664.20/x
  3. Step 3: Cross multiply
    860,959,664.20x = 1,207,639,355 × 860,959,664.20
  4. Step 4: Simplify right side
    860,959,664.20x = 1,039,728,773,555,504,640
  5. Step 5: Solve for x
    x = 1,039,728,773,555,504,640/860,959,664.20
  6. Step 6: Final answer
    x = 1,207,639,355

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.