Home / 1,291,282.20-1,936,923.30-866,129.40

Finding the Fourth Proportional to 1,291,282.20, 1,936,923.30 and 866,129.40

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Solution

The fourth proportional to 1,291,282.20, 1,936,923.30 and 866,129.40 is: 1,299,194.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,282.20 : 1,936,923.30 = 866,129.40 : x
  2. Step 2: Convert to fraction form
    1,291,282.20/1,936,923.30 = 866,129.40/x
  3. Step 3: Cross multiply
    1,291,282.20x = 1,936,923.30 × 866,129.40
  4. Step 4: Simplify right side
    1,291,282.20x = 1,677,626,215,675.02
  5. Step 5: Solve for x
    x = 1,677,626,215,675.02/1,291,282.20
  6. Step 6: Final answer
    x = 1,299,194.10

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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.