Finding the Fourth Proportional to 1,638,263,792.50, 2,457,126,646.44 and 705,335,475.36
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Solution
The fourth proportional to 1,638,263,792.50, 2,457,126,646.44 and 705,335,475.36 is: 1,057,887,379.99
Step by Step Solution
- Step 1: Write the proportion equation
1,638,263,792.50 : 2,457,126,646.44 = 705,335,475.36 : x - Step 2: Convert to fraction form
1,638,263,792.50/2,457,126,646.44 = 705,335,475.36/x - Step 3: Cross multiply
1,638,263,792.50x = 2,457,126,646.44 × 705,335,475.36 - Step 4: Simplify right side
1,638,263,792.50x = 1,733,098,591,186,480,128 - Step 5: Solve for x
x = 1,733,098,591,186,480,128/1,638,263,792.50 - Step 6: Final answer
x = 1,057,887,379.99
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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.