Home / 418,687,005.53-628,030,360.47-111,971,146.79

Finding the Fourth Proportional to 418,687,005.53, 628,030,360.47 and 111,971,146.79

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Solution

The fourth proportional to 418,687,005.53, 628,030,360.47 and 111,971,146.79 is: 167,956,680.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,687,005.53 : 628,030,360.47 = 111,971,146.79 : x
  2. Step 2: Convert to fraction form
    418,687,005.53/628,030,360.47 = 111,971,146.79/x
  3. Step 3: Cross multiply
    418,687,005.53x = 628,030,360.47 × 111,971,146.79
  4. Step 4: Simplify right side
    418,687,005.53x = 70,321,279,677,622,832
  5. Step 5: Solve for x
    x = 70,321,279,677,622,832/418,687,005.53
  6. Step 6: Final answer
    x = 167,956,680.65

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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.