Home / 3,119,114.80-4,678,672.20-1,917,139.60

Finding the Fourth Proportional to 3,119,114.80, 4,678,672.20 and 1,917,139.60

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Solution

The fourth proportional to 3,119,114.80, 4,678,672.20 and 1,917,139.60 is: 2,875,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119,114.80 : 4,678,672.20 = 1,917,139.60 : x
  2. Step 2: Convert to fraction form
    3,119,114.80/4,678,672.20 = 1,917,139.60/x
  3. Step 3: Cross multiply
    3,119,114.80x = 4,678,672.20 × 1,917,139.60
  4. Step 4: Simplify right side
    3,119,114.80x = 8,969,667,750,039.12
  5. Step 5: Solve for x
    x = 8,969,667,750,039.12/3,119,114.80
  6. Step 6: Final answer
    x = 2,875,709.40

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Similar ratio
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1.5x scale

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.