Finding the Fourth Proportional to 397,989,739.10, 596,984,608.65 and 121,640,419.10
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Solution
The fourth proportional to 397,989,739.10, 596,984,608.65 and 121,640,419.10 is: 182,460,628.65
Step by Step Solution
- Step 1: Write the proportion equation
397,989,739.10 : 596,984,608.65 = 121,640,419.10 : x - Step 2: Convert to fraction form
397,989,739.10/596,984,608.65 = 121,640,419.10/x - Step 3: Cross multiply
397,989,739.10x = 596,984,608.65 × 121,640,419.10 - Step 4: Simplify right side
397,989,739.10x = 72,617,457,992,435,472 - Step 5: Solve for x
x = 72,617,457,992,435,472/397,989,739.10 - Step 6: Final answer
x = 182,460,628.65
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1.5x scale
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.