Finding the Fourth Proportional to 5,440,291,981.20, 8,160,437,971.80 and 1,993,272,051.60
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Solution
The fourth proportional to 5,440,291,981.20, 8,160,437,971.80 and 1,993,272,051.60 is: 2,989,908,077.40
Step by Step Solution
- Step 1: Write the proportion equation
5,440,291,981.20 : 8,160,437,971.80 = 1,993,272,051.60 : x - Step 2: Convert to fraction form
5,440,291,981.20/8,160,437,971.80 = 1,993,272,051.60/x - Step 3: Cross multiply
5,440,291,981.20x = 8,160,437,971.80 × 1,993,272,051.60 - Step 4: Simplify right side
5,440,291,981.20x = 16,265,972,938,004,328,448 - Step 5: Solve for x
x = 16,265,972,938,004,328,448/5,440,291,981.20 - Step 6: Final answer
x = 2,989,908,077.40
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.