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Finding the Fourth Proportional to 569,089,759.36, 785,103,387.72 and 380,978,659.72

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Solution

The fourth proportional to 569,089,759.36, 785,103,387.72 and 380,978,659.72 is: 525,589,560.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,089,759.36 : 785,103,387.72 = 380,978,659.72 : x
  2. Step 2: Convert to fraction form
    569,089,759.36/785,103,387.72 = 380,978,659.72/x
  3. Step 3: Cross multiply
    569,089,759.36x = 785,103,387.72 × 380,978,659.72
  4. Step 4: Simplify right side
    569,089,759.36x = 299,107,636,395,197,120
  5. Step 5: Solve for x
    x = 299,107,636,395,197,120/569,089,759.36
  6. Step 6: Final answer
    x = 525,589,560.30

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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.