Finding the Fourth Proportional to 1,212,128,286.82, 1,672,737,531.24 and 655,211,332.06
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Solution
The fourth proportional to 1,212,128,286.82, 1,672,737,531.24 and 655,211,332.06 is: 904,191,906.04
Step by Step Solution
- Step 1: Write the proportion equation
1,212,128,286.82 : 1,672,737,531.24 = 655,211,332.06 : x - Step 2: Convert to fraction form
1,212,128,286.82/1,672,737,531.24 = 655,211,332.06/x - Step 3: Cross multiply
1,212,128,286.82x = 1,672,737,531.24 × 655,211,332.06 - Step 4: Simplify right side
1,212,128,286.82x = 1,095,996,586,030,516,224 - Step 5: Solve for x
x = 1,095,996,586,030,516,224/1,212,128,286.82 - Step 6: Final answer
x = 904,191,906.04
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1.5x scale
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.