Home / 2,198,681.70-3,298,022.55-778,881.30

Finding the Fourth Proportional to 2,198,681.70, 3,298,022.55 and 778,881.30

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Solution

The fourth proportional to 2,198,681.70, 3,298,022.55 and 778,881.30 is: 1,168,321.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,198,681.70 : 3,298,022.55 = 778,881.30 : x
  2. Step 2: Convert to fraction form
    2,198,681.70/3,298,022.55 = 778,881.30/x
  3. Step 3: Cross multiply
    2,198,681.70x = 3,298,022.55 × 778,881.30
  4. Step 4: Simplify right side
    2,198,681.70x = 2,568,768,091,173.32
  5. Step 5: Solve for x
    x = 2,568,768,091,173.32/2,198,681.70
  6. Step 6: Final answer
    x = 1,168,321.95

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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.