Finding the Fourth Proportional to 1,403,942,403.91, 1,937,416,839.37 and 777,397,379.75
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Solution
The fourth proportional to 1,403,942,403.91, 1,937,416,839.37 and 777,397,379.75 is: 1,072,795,272.95
Step by Step Solution
- Step 1: Write the proportion equation
1,403,942,403.91 : 1,937,416,839.37 = 777,397,379.75 : x - Step 2: Convert to fraction form
1,403,942,403.91/1,937,416,839.37 = 777,397,379.75/x - Step 3: Cross multiply
1,403,942,403.91x = 1,937,416,839.37 × 777,397,379.75 - Step 4: Simplify right side
1,403,942,403.91x = 1,506,142,774,409,764,608 - Step 5: Solve for x
x = 1,506,142,774,409,764,608/1,403,942,403.91 - Step 6: Final answer
x = 1,072,795,272.95
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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.