Finding the Fourth Proportional to 678,419,503.68, 936,241,623.11 and 377,017,518.21
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Solution
The fourth proportional to 678,419,503.68, 936,241,623.11 and 377,017,518.21 is: 520,296,794.65
Step by Step Solution
- Step 1: Write the proportion equation
678,419,503.68 : 936,241,623.11 = 377,017,518.21 : x - Step 2: Convert to fraction form
678,419,503.68/936,241,623.11 = 377,017,518.21/x - Step 3: Cross multiply
678,419,503.68x = 936,241,623.11 × 377,017,518.21 - Step 4: Simplify right side
678,419,503.68x = 352,979,493,190,406,976 - Step 5: Solve for x
x = 352,979,493,190,406,976/678,419,503.68 - Step 6: Final answer
x = 520,296,794.65
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1.5x scale
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.