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Finding the Fourth Proportional to 1,379,581.44, 1,903,802.88 and 775,968

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Solution

The fourth proportional to 1,379,581.44, 1,903,802.88 and 775,968 is: 1,070,824.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,581.44 : 1,903,802.88 = 775,968 : x
  2. Step 2: Convert to fraction form
    1,379,581.44/1,903,802.88 = 775,968/x
  3. Step 3: Cross multiply
    1,379,581.44x = 1,903,802.88 × 775,968
  4. Step 4: Simplify right side
    1,379,581.44x = 1,477,290,113,187.84
  5. Step 5: Solve for x
    x = 1,477,290,113,187.84/1,379,581.44
  6. Step 6: Final answer
    x = 1,070,824.87

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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.