Home / 1,861,237.80-2,791,856.70-513,608.40

Finding the Fourth Proportional to 1,861,237.80, 2,791,856.70 and 513,608.40

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Solution

The fourth proportional to 1,861,237.80, 2,791,856.70 and 513,608.40 is: 770,412.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861,237.80 : 2,791,856.70 = 513,608.40 : x
  2. Step 2: Convert to fraction form
    1,861,237.80/2,791,856.70 = 513,608.40/x
  3. Step 3: Cross multiply
    1,861,237.80x = 2,791,856.70 × 513,608.40
  4. Step 4: Simplify right side
    1,861,237.80x = 1,433,921,052,716.28
  5. Step 5: Solve for x
    x = 1,433,921,052,716.28/1,861,237.80
  6. Step 6: Final answer
    x = 770,412.60

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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.