Finding the Fourth Proportional to 3,987,155,272.24, 5,502,385,271.64 and 2,203,124,259.76
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Solution
The fourth proportional to 3,987,155,272.24, 5,502,385,271.64 and 2,203,124,259.76 is: 3,040,372,809.88
Step by Step Solution
- Step 1: Write the proportion equation
3,987,155,272.24 : 5,502,385,271.64 = 2,203,124,259.76 : x - Step 2: Convert to fraction form
3,987,155,272.24/5,502,385,271.64 = 2,203,124,259.76/x - Step 3: Cross multiply
3,987,155,272.24x = 5,502,385,271.64 × 2,203,124,259.76 - Step 4: Simplify right side
3,987,155,272.24x = 12,122,438,478,496,202,752 - Step 5: Solve for x
x = 12,122,438,478,496,202,752/3,987,155,272.24 - Step 6: Final answer
x = 3,040,372,809.88
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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.