Finding the Fourth Proportional to 1,986,569,512.10, 2,979,755,211.45 and 742,908,543.62
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Solution
The fourth proportional to 1,986,569,512.10, 2,979,755,211.45 and 742,908,543.62 is: 1,114,325,771.64
Step by Step Solution
- Step 1: Write the proportion equation
1,986,569,512.10 : 2,979,755,211.45 = 742,908,543.62 : x - Step 2: Convert to fraction form
1,986,569,512.10/2,979,755,211.45 = 742,908,543.62/x - Step 3: Cross multiply
1,986,569,512.10x = 2,979,755,211.45 × 742,908,543.62 - Step 4: Simplify right side
1,986,569,512.10x = 2,213,685,604,482,424,576 - Step 5: Solve for x
x = 2,213,685,604,482,424,576/1,986,569,512.10 - Step 6: Final answer
x = 1,114,325,771.64
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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.