Finding the Fourth Proportional to 1,318,393,583.61, 1,818,555,573.87 and 782,165,608.08
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Solution
The fourth proportional to 1,318,393,583.61, 1,818,555,573.87 and 782,165,608.08 is: 1,078,897,564.39
Step by Step Solution
- Step 1: Write the proportion equation
1,318,393,583.61 : 1,818,555,573.87 = 782,165,608.08 : x - Step 2: Convert to fraction form
1,318,393,583.61/1,818,555,573.87 = 782,165,608.08/x - Step 3: Cross multiply
1,318,393,583.61x = 1,818,555,573.87 × 782,165,608.08 - Step 4: Simplify right side
1,318,393,583.61x = 1,422,411,626,263,301,888 - Step 5: Solve for x
x = 1,422,411,626,263,301,888/1,318,393,583.61 - Step 6: Final answer
x = 1,078,897,564.39
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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.