Home / 1,993,631.60-2,990,884.80-645,564.80

Finding the Fourth Proportional to 1,993,631.60, 2,990,884.80 and 645,564.80

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Solution

The fourth proportional to 1,993,631.60, 2,990,884.80 and 645,564.80 is: 968,488.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,631.60 : 2,990,884.80 = 645,564.80 : x
  2. Step 2: Convert to fraction form
    1,993,631.60/2,990,884.80 = 645,564.80/x
  3. Step 3: Cross multiply
    1,993,631.60x = 2,990,884.80 × 645,564.80
  4. Step 4: Simplify right side
    1,993,631.60x = 1,930,809,947,735.04
  5. Step 5: Solve for x
    x = 1,930,809,947,735.04/1,993,631.60
  6. Step 6: Final answer
    x = 968,488.84

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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.