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Finding the Fourth Proportional to 786,486.24, 1,089,460.83 and 770,543.01

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Solution

The fourth proportional to 786,486.24, 1,089,460.83 and 770,543.01 is: 1,067,375.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,486.24 : 1,089,460.83 = 770,543.01 : x
  2. Step 2: Convert to fraction form
    786,486.24/1,089,460.83 = 770,543.01/x
  3. Step 3: Cross multiply
    786,486.24x = 1,089,460.83 × 770,543.01
  4. Step 4: Simplify right side
    786,486.24x = 839,476,430,114.84
  5. Step 5: Solve for x
    x = 839,476,430,114.84/786,486.24
  6. Step 6: Final answer
    x = 1,067,375.86

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.