Home / 917,089,579.92-1,265,636,753.37-690,623,149.26

Finding the Fourth Proportional to 917,089,579.92, 1,265,636,753.37 and 690,623,149.26

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Solution

The fourth proportional to 917,089,579.92, 1,265,636,753.37 and 690,623,149.26 is: 953,099,958.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,089,579.92 : 1,265,636,753.37 = 690,623,149.26 : x
  2. Step 2: Convert to fraction form
    917,089,579.92/1,265,636,753.37 = 690,623,149.26/x
  3. Step 3: Cross multiply
    917,089,579.92x = 1,265,636,753.37 × 690,623,149.26
  4. Step 4: Simplify right side
    917,089,579.92x = 874,078,040,431,591,168
  5. Step 5: Solve for x
    x = 874,078,040,431,591,168/917,089,579.92
  6. Step 6: Final answer
    x = 953,099,958.36

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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.