Home / 1,276,991.64-1,915,487.44-1,213,136.70

Finding the Fourth Proportional to 1,276,991.64, 1,915,487.44 and 1,213,136.70

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Solution

The fourth proportional to 1,276,991.64, 1,915,487.44 and 1,213,136.70 is: 1,819,705.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,991.64 : 1,915,487.44 = 1,213,136.70 : x
  2. Step 2: Convert to fraction form
    1,276,991.64/1,915,487.44 = 1,213,136.70/x
  3. Step 3: Cross multiply
    1,276,991.64x = 1,915,487.44 × 1,213,136.70
  4. Step 4: Simplify right side
    1,276,991.64x = 2,323,748,111,853.05
  5. Step 5: Solve for x
    x = 2,323,748,111,853.05/1,276,991.64
  6. Step 6: Final answer
    x = 1,819,705.03

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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.