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Finding the Fourth Proportional to 774,612,750.97, 1,068,987,999.68 and 422,211,566.67

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Solution

The fourth proportional to 774,612,750.97, 1,068,987,999.68 and 422,211,566.67 is: 582,664,173.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,612,750.97 : 1,068,987,999.68 = 422,211,566.67 : x
  2. Step 2: Convert to fraction form
    774,612,750.97/1,068,987,999.68 = 422,211,566.67/x
  3. Step 3: Cross multiply
    774,612,750.97x = 1,068,987,999.68 × 422,211,566.67
  4. Step 4: Simplify right side
    774,612,750.97x = 451,339,098,088,866,240
  5. Step 5: Solve for x
    x = 451,339,098,088,866,240/774,612,750.97
  6. Step 6: Final answer
    x = 582,664,173.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.