Finding the Fourth Proportional to 1,392,405,944.10, 2,088,381,876.49 and 409,602,636.55
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Solution
The fourth proportional to 1,392,405,944.10, 2,088,381,876.49 and 409,602,636.55 is: 614,337,166.80
Step by Step Solution
- Step 1: Write the proportion equation
1,392,405,944.10 : 2,088,381,876.49 = 409,602,636.55 : x - Step 2: Convert to fraction form
1,392,405,944.10/2,088,381,876.49 = 409,602,636.55/x - Step 3: Cross multiply
1,392,405,944.10x = 2,088,381,876.49 × 409,602,636.55 - Step 4: Simplify right side
1,392,405,944.10x = 855,406,722,733,540,480 - Step 5: Solve for x
x = 855,406,722,733,540,480/1,392,405,944.10 - Step 6: Final answer
x = 614,337,166.80
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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.