Home / 1,213,456.95-1,820,185.43-1,138,661.55

Finding the Fourth Proportional to 1,213,456.95, 1,820,185.43 and 1,138,661.55

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Solution

The fourth proportional to 1,213,456.95, 1,820,185.43 and 1,138,661.55 is: 1,707,992.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,456.95 : 1,820,185.43 = 1,138,661.55 : x
  2. Step 2: Convert to fraction form
    1,213,456.95/1,820,185.43 = 1,138,661.55/x
  3. Step 3: Cross multiply
    1,213,456.95x = 1,820,185.43 × 1,138,661.55
  4. Step 4: Simplify right side
    1,213,456.95x = 2,072,575,157,317.91
  5. Step 5: Solve for x
    x = 2,072,575,157,317.91/1,213,456.95
  6. Step 6: Final answer
    x = 1,707,992.33

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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.