Home / 1,993,390.80-2,989,697.40-645,226.80

Finding the Fourth Proportional to 1,993,390.80, 2,989,697.40 and 645,226.80

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Solution

The fourth proportional to 1,993,390.80, 2,989,697.40 and 645,226.80 is: 967,714.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,390.80 : 2,989,697.40 = 645,226.80 : x
  2. Step 2: Convert to fraction form
    1,993,390.80/2,989,697.40 = 645,226.80/x
  3. Step 3: Cross multiply
    1,993,390.80x = 2,989,697.40 × 645,226.80
  4. Step 4: Simplify right side
    1,993,390.80x = 1,929,032,886,370.32
  5. Step 5: Solve for x
    x = 1,929,032,886,370.32/1,993,390.80
  6. Step 6: Final answer
    x = 967,714.35

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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.