Finding the Fourth Proportional to 643,412,025.09, 887,837,544.35 and 361,089,712.84
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Solution
The fourth proportional to 643,412,025.09, 887,837,544.35 and 361,089,712.84 is: 498,263,929.55
Step by Step Solution
- Step 1: Write the proportion equation
643,412,025.09 : 887,837,544.35 = 361,089,712.84 : x - Step 2: Convert to fraction form
643,412,025.09/887,837,544.35 = 361,089,712.84/x - Step 3: Cross multiply
643,412,025.09x = 887,837,544.35 × 361,089,712.84 - Step 4: Simplify right side
643,412,025.09x = 320,589,003,937,912,256 - Step 5: Solve for x
x = 320,589,003,937,912,256/643,412,025.09 - Step 6: Final answer
x = 498,263,929.55
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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.