Home / 774,178,266.72-1,068,364,137.60-421,757,153.44

Finding the Fourth Proportional to 774,178,266.72, 1,068,364,137.60 and 421,757,153.44

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Solution

The fourth proportional to 774,178,266.72, 1,068,364,137.60 and 421,757,153.44 is: 582,023,852.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,178,266.72 : 1,068,364,137.60 = 421,757,153.44 : x
  2. Step 2: Convert to fraction form
    774,178,266.72/1,068,364,137.60 = 421,757,153.44/x
  3. Step 3: Cross multiply
    774,178,266.72x = 1,068,364,137.60 × 421,757,153.44
  4. Step 4: Simplify right side
    774,178,266.72x = 450,590,217,511,556,480
  5. Step 5: Solve for x
    x = 450,590,217,511,556,480/774,178,266.72
  6. Step 6: Final answer
    x = 582,023,852.75

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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.