Home / 2,178,169.56-3,005,643.78-1,211,143.77

Finding the Fourth Proportional to 2,178,169.56, 3,005,643.78 and 1,211,143.77

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Solution

The fourth proportional to 2,178,169.56, 3,005,643.78 and 1,211,143.77 is: 1,671,250.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178,169.56 : 3,005,643.78 = 1,211,143.77 : x
  2. Step 2: Convert to fraction form
    2,178,169.56/3,005,643.78 = 1,211,143.77/x
  3. Step 3: Cross multiply
    2,178,169.56x = 3,005,643.78 × 1,211,143.77
  4. Step 4: Simplify right side
    2,178,169.56x = 3,640,266,738,986.25
  5. Step 5: Solve for x
    x = 3,640,266,738,986.25/2,178,169.56
  6. Step 6: Final answer
    x = 1,671,250.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.