Finding the Fourth Proportional to 892,409,473.10, 1,231,554,979.68 and 495,949,172.70
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Solution
The fourth proportional to 892,409,473.10, 1,231,554,979.68 and 495,949,172.70 is: 684,426,478.78
Step by Step Solution
- Step 1: Write the proportion equation
892,409,473.10 : 1,231,554,979.68 = 495,949,172.70 : x - Step 2: Convert to fraction form
892,409,473.10/1,231,554,979.68 = 495,949,172.70/x - Step 3: Cross multiply
892,409,473.10x = 1,231,554,979.68 × 495,949,172.70 - Step 4: Simplify right side
892,409,473.10x = 610,788,673,306,861,312 - Step 5: Solve for x
x = 610,788,673,306,861,312/892,409,473.10 - Step 6: Final answer
x = 684,426,478.78
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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.