Home / 511,120,890.72-705,687,361.20-302,344,097.12

Finding the Fourth Proportional to 511,120,890.72, 705,687,361.20 and 302,344,097.12

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Solution

The fourth proportional to 511,120,890.72, 705,687,361.20 and 302,344,097.12 is: 417,436,289.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,120,890.72 : 705,687,361.20 = 302,344,097.12 : x
  2. Step 2: Convert to fraction form
    511,120,890.72/705,687,361.20 = 302,344,097.12/x
  3. Step 3: Cross multiply
    511,120,890.72x = 705,687,361.20 × 302,344,097.12
  4. Step 4: Simplify right side
    511,120,890.72x = 213,360,408,071,009,344
  5. Step 5: Solve for x
    x = 213,360,408,071,009,344/511,120,890.72
  6. Step 6: Final answer
    x = 417,436,289.43

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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.