Finding the Fourth Proportional to 939,351,201.91, 1,296,269,145.02 and 521,690,391.41
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Solution
The fourth proportional to 939,351,201.91, 1,296,269,145.02 and 521,690,391.41 is: 719,913,016.84
Step by Step Solution
- Step 1: Write the proportion equation
939,351,201.91 : 1,296,269,145.02 = 521,690,391.41 : x - Step 2: Convert to fraction form
939,351,201.91/1,296,269,145.02 = 521,690,391.41/x - Step 3: Cross multiply
939,351,201.91x = 1,296,269,145.02 × 521,690,391.41 - Step 4: Simplify right side
939,351,201.91x = 676,251,157,633,012,736 - Step 5: Solve for x
x = 676,251,157,633,012,736/939,351,201.91 - Step 6: Final answer
x = 719,913,016.84
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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.