Home / 1,993,107.80-2,989,272.90-644,943.80

Finding the Fourth Proportional to 1,993,107.80, 2,989,272.90 and 644,943.80

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Solution

The fourth proportional to 1,993,107.80, 2,989,272.90 and 644,943.80 is: 967,289.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,107.80 : 2,989,272.90 = 644,943.80 : x
  2. Step 2: Convert to fraction form
    1,993,107.80/2,989,272.90 = 644,943.80/x
  3. Step 3: Cross multiply
    1,993,107.80x = 2,989,272.90 × 644,943.80
  4. Step 4: Simplify right side
    1,993,107.80x = 1,927,913,023,363.02
  5. Step 5: Solve for x
    x = 1,927,913,023,363.02/1,993,107.80
  6. Step 6: Final answer
    x = 967,289.89

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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.