Home / 279,431,086,985.60-419,217,167,315.84-77,972,652,921.50

Finding the Fourth Proportional to 279,431,086,985.60, 419,217,167,315.84 and 77,972,652,921.50

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Solution

The fourth proportional to 279,431,086,985.60, 419,217,167,315.84 and 77,972,652,921.50 is: 116,978,662,032.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,431,086,985.60 : 419,217,167,315.84 = 77,972,652,921.50 : x
  2. Step 2: Convert to fraction form
    279,431,086,985.60/419,217,167,315.84 = 77,972,652,921.50/x
  3. Step 3: Cross multiply
    279,431,086,985.60x = 419,217,167,315.84 × 77,972,652,921.50
  4. Step 4: Simplify right side
    279,431,086,985.60x = 32,687,474,685,852,386,328,576
  5. Step 5: Solve for x
    x = 32,687,474,685,852,386,328,576/279,431,086,985.60
  6. Step 6: Final answer
    x = 116,978,662,032.46

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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.