Home / 2,105,985.44-3,158,975.68-686,039.20

Finding the Fourth Proportional to 2,105,985.44, 3,158,975.68 and 686,039.20

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Solution

The fourth proportional to 2,105,985.44, 3,158,975.68 and 686,039.20 is: 1,029,057.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,105,985.44 : 3,158,975.68 = 686,039.20 : x
  2. Step 2: Convert to fraction form
    2,105,985.44/3,158,975.68 = 686,039.20/x
  3. Step 3: Cross multiply
    2,105,985.44x = 3,158,975.68 × 686,039.20
  4. Step 4: Simplify right side
    2,105,985.44x = 2,167,181,148,326.66
  5. Step 5: Solve for x
    x = 2,167,181,148,326.66/2,105,985.44
  6. Step 6: Final answer
    x = 1,029,057.99

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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.