Finding the Fourth Proportional to 3,919,277,507.36, 5,408,593,490.67 and 2,135,145,621.38
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Solution
The fourth proportional to 3,919,277,507.36, 5,408,593,490.67 and 2,135,145,621.38 is: 2,946,495,798.71
Step by Step Solution
- Step 1: Write the proportion equation
3,919,277,507.36 : 5,408,593,490.67 = 2,135,145,621.38 : x - Step 2: Convert to fraction form
3,919,277,507.36/5,408,593,490.67 = 2,135,145,621.38/x - Step 3: Cross multiply
3,919,277,507.36x = 5,408,593,490.67 × 2,135,145,621.38 - Step 4: Simplify right side
3,919,277,507.36x = 11,548,134,709,428,420,608 - Step 5: Solve for x
x = 11,548,134,709,428,420,608/3,919,277,507.36 - Step 6: Final answer
x = 2,946,495,798.71
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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.