Finding the Fourth Proportional to 3,953,640,153.94, 5,456,008,440.39 and 2,169,523,457.62
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Solution
The fourth proportional to 3,953,640,153.94, 5,456,008,440.39 and 2,169,523,457.62 is: 2,993,934,155.74
Step by Step Solution
- Step 1: Write the proportion equation
3,953,640,153.94 : 5,456,008,440.39 = 2,169,523,457.62 : x - Step 2: Convert to fraction form
3,953,640,153.94/5,456,008,440.39 = 2,169,523,457.62/x - Step 3: Cross multiply
3,953,640,153.94x = 5,456,008,440.39 × 2,169,523,457.62 - Step 4: Simplify right side
3,953,640,153.94x = 11,836,938,296,398,817,280 - Step 5: Solve for x
x = 11,836,938,296,398,817,280/3,953,640,153.94 - Step 6: Final answer
x = 2,993,934,155.74
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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.