Home / 1,215,373.54-1,675,792.85-828,418.06

Finding the Fourth Proportional to 1,215,373.54, 1,675,792.85 and 828,418.06

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Solution

The fourth proportional to 1,215,373.54, 1,675,792.85 and 828,418.06 is: 1,142,247.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,373.54 : 1,675,792.85 = 828,418.06 : x
  2. Step 2: Convert to fraction form
    1,215,373.54/1,675,792.85 = 828,418.06/x
  3. Step 3: Cross multiply
    1,215,373.54x = 1,675,792.85 × 828,418.06
  4. Step 4: Simplify right side
    1,215,373.54x = 1,388,257,059,658.21
  5. Step 5: Solve for x
    x = 1,388,257,059,658.21/1,215,373.54
  6. Step 6: Final answer
    x = 1,142,247.23

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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.