Home / 1,993,135.60-2,990,140.80-645,068.80

Finding the Fourth Proportional to 1,993,135.60, 2,990,140.80 and 645,068.80

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Solution

The fourth proportional to 1,993,135.60, 2,990,140.80 and 645,068.80 is: 967,744.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,135.60 : 2,990,140.80 = 645,068.80 : x
  2. Step 2: Convert to fraction form
    1,993,135.60/2,990,140.80 = 645,068.80/x
  3. Step 3: Cross multiply
    1,993,135.60x = 2,990,140.80 × 645,068.80
  4. Step 4: Simplify right side
    1,993,135.60x = 1,928,846,537,687.04
  5. Step 5: Solve for x
    x = 1,928,846,537,687.04/1,993,135.60
  6. Step 6: Final answer
    x = 967,744.76

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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.