Finding the Fourth Proportional to 1,986,569,439.66, 2,979,755,102.73 and 742,908,470.97
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Solution
The fourth proportional to 1,986,569,439.66, 2,979,755,102.73 and 742,908,470.97 is: 1,114,325,662.64
Step by Step Solution
- Step 1: Write the proportion equation
1,986,569,439.66 : 2,979,755,102.73 = 742,908,470.97 : x - Step 2: Convert to fraction form
1,986,569,439.66/2,979,755,102.73 = 742,908,470.97/x - Step 3: Cross multiply
1,986,569,439.66x = 2,979,755,102.73 × 742,908,470.97 - Step 4: Simplify right side
1,986,569,439.66x = 2,213,685,307,234,199,552 - Step 5: Solve for x
x = 2,213,685,307,234,199,552/1,986,569,439.66 - Step 6: Final answer
x = 1,114,325,662.64
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.