Home / 858,431,352.90-1,287,647,029.35-212,199,096.90

Finding the Fourth Proportional to 858,431,352.90, 1,287,647,029.35 and 212,199,096.90

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Solution

The fourth proportional to 858,431,352.90, 1,287,647,029.35 and 212,199,096.90 is: 318,298,645.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,431,352.90 : 1,287,647,029.35 = 212,199,096.90 : x
  2. Step 2: Convert to fraction form
    858,431,352.90/1,287,647,029.35 = 212,199,096.90/x
  3. Step 3: Cross multiply
    858,431,352.90x = 1,287,647,029.35 × 212,199,096.90
  4. Step 4: Simplify right side
    858,431,352.90x = 273,237,536,754,037,792
  5. Step 5: Solve for x
    x = 273,237,536,754,037,792/858,431,352.90
  6. Step 6: Final answer
    x = 318,298,645.35

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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.