Home / 1,989,145.80-2,983,718.70-493,237.80

Finding the Fourth Proportional to 1,989,145.80, 2,983,718.70 and 493,237.80

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Solution

The fourth proportional to 1,989,145.80, 2,983,718.70 and 493,237.80 is: 739,856.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,145.80 : 2,983,718.70 = 493,237.80 : x
  2. Step 2: Convert to fraction form
    1,989,145.80/2,983,718.70 = 493,237.80/x
  3. Step 3: Cross multiply
    1,989,145.80x = 2,983,718.70 × 493,237.80
  4. Step 4: Simplify right side
    1,989,145.80x = 1,471,682,847,406.86
  5. Step 5: Solve for x
    x = 1,471,682,847,406.86/1,989,145.80
  6. Step 6: Final answer
    x = 739,856.70

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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.