Home / 913,121.70-1,369,682.55-864,132.90

Finding the Fourth Proportional to 913,121.70, 1,369,682.55 and 864,132.90

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Solution

The fourth proportional to 913,121.70, 1,369,682.55 and 864,132.90 is: 1,296,199.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,121.70 : 1,369,682.55 = 864,132.90 : x
  2. Step 2: Convert to fraction form
    913,121.70/1,369,682.55 = 864,132.90/x
  3. Step 3: Cross multiply
    913,121.70x = 1,369,682.55 × 864,132.90
  4. Step 4: Simplify right side
    913,121.70x = 1,183,587,754,010.90
  5. Step 5: Solve for x
    x = 1,183,587,754,010.90/913,121.70
  6. Step 6: Final answer
    x = 1,296,199.35

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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.