Finding the Fourth Proportional to 838,436,561.22, 1,157,047,197.80 and 486,221,676.52
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Solution
The fourth proportional to 838,436,561.22, 1,157,047,197.80 and 486,221,676.52 is: 670,988,664.32
Step by Step Solution
- Step 1: Write the proportion equation
838,436,561.22 : 1,157,047,197.80 = 486,221,676.52 : x - Step 2: Convert to fraction form
838,436,561.22/1,157,047,197.80 = 486,221,676.52/x - Step 3: Cross multiply
838,436,561.22x = 1,157,047,197.80 × 486,221,676.52 - Step 4: Simplify right side
838,436,561.22x = 562,581,428,327,084,032 - Step 5: Solve for x
x = 562,581,428,327,084,032/838,436,561.22 - Step 6: Final answer
x = 670,988,664.32
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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.