Home / 279,431,086,987.60-419,217,167,318.84-77,972,652,923.50

Finding the Fourth Proportional to 279,431,086,987.60, 419,217,167,318.84 and 77,972,652,923.50

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Solution

The fourth proportional to 279,431,086,987.60, 419,217,167,318.84 and 77,972,652,923.50 is: 116,978,662,035.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,431,086,987.60 : 419,217,167,318.84 = 77,972,652,923.50 : x
  2. Step 2: Convert to fraction form
    279,431,086,987.60/419,217,167,318.84 = 77,972,652,923.50/x
  3. Step 3: Cross multiply
    279,431,086,987.60x = 419,217,167,318.84 × 77,972,652,923.50
  4. Step 4: Simplify right side
    279,431,086,987.60x = 32,687,474,686,924,739,837,952
  5. Step 5: Solve for x
    x = 32,687,474,686,924,739,837,952/279,431,086,987.60
  6. Step 6: Final answer
    x = 116,978,662,035.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.