Home / 505,961,278.73-698,213,449.90-279,908,613.89

Finding the Fourth Proportional to 505,961,278.73, 698,213,449.90 and 279,908,613.89

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Solution

The fourth proportional to 505,961,278.73, 698,213,449.90 and 279,908,613.89 is: 386,266,631.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,961,278.73 : 698,213,449.90 = 279,908,613.89 : x
  2. Step 2: Convert to fraction form
    505,961,278.73/698,213,449.90 = 279,908,613.89/x
  3. Step 3: Cross multiply
    505,961,278.73x = 698,213,449.90 × 279,908,613.89
  4. Step 4: Simplify right side
    505,961,278.73x = 195,435,958,960,863,936
  5. Step 5: Solve for x
    x = 195,435,958,960,863,936/505,961,278.73
  6. Step 6: Final answer
    x = 386,266,631.81

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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.