Finding the Fourth Proportional to 1,319,372,323.55, 1,819,897,131.44 and 810,512,360.99
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Solution
The fourth proportional to 1,319,372,323.55, 1,819,897,131.44 and 810,512,360.99 is: 1,117,993,074.76
Step by Step Solution
- Step 1: Write the proportion equation
1,319,372,323.55 : 1,819,897,131.44 = 810,512,360.99 : x - Step 2: Convert to fraction form
1,319,372,323.55/1,819,897,131.44 = 810,512,360.99/x - Step 3: Cross multiply
1,319,372,323.55x = 1,819,897,131.44 × 810,512,360.99 - Step 4: Simplify right side
1,319,372,323.55x = 1,475,049,120,755,289,600 - Step 5: Solve for x
x = 1,475,049,120,755,289,600/1,319,372,323.55 - Step 6: Final answer
x = 1,117,993,074.76
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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.