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Finding the Fourth Proportional to 634,640,408.56, 875,805,451.86 and 352,383,374.44

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Solution

The fourth proportional to 634,640,408.56, 875,805,451.86 and 352,383,374.44 is: 486,289,994.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,640,408.56 : 875,805,451.86 = 352,383,374.44 : x
  2. Step 2: Convert to fraction form
    634,640,408.56/875,805,451.86 = 352,383,374.44/x
  3. Step 3: Cross multiply
    634,640,408.56x = 875,805,451.86 × 352,383,374.44
  4. Step 4: Simplify right side
    634,640,408.56x = 308,619,280,479,375,808
  5. Step 5: Solve for x
    x = 308,619,280,479,375,808/634,640,408.56
  6. Step 6: Final answer
    x = 486,289,994.01

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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.