Finding the Fourth Proportional to 1,186,512,442.40, 1,779,936,625.20 and 368,539,450.40
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Solution
The fourth proportional to 1,186,512,442.40, 1,779,936,625.20 and 368,539,450.40 is: 552,861,345.70
Step by Step Solution
- Step 1: Write the proportion equation
1,186,512,442.40 : 1,779,936,625.20 = 368,539,450.40 : x - Step 2: Convert to fraction form
1,186,512,442.40/1,779,936,625.20 = 368,539,450.40/x - Step 3: Cross multiply
1,186,512,442.40x = 1,779,936,625.20 × 368,539,450.40 - Step 4: Simplify right side
1,186,512,442.40x = 655,976,865,598,038,784 - Step 5: Solve for x
x = 655,976,865,598,038,784/1,186,512,442.40 - Step 6: Final answer
x = 552,861,345.70
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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.