Finding the Fourth Proportional to 13,507,564,958.99, 18,640,441,410.30 and 7,486,459,087.85
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Solution
The fourth proportional to 13,507,564,958.99, 18,640,441,410.30 and 7,486,459,087.85 is: 10,331,314,520.53
Step by Step Solution
- Step 1: Write the proportion equation
13,507,564,958.99 : 18,640,441,410.30 = 7,486,459,087.85 : x - Step 2: Convert to fraction form
13,507,564,958.99/18,640,441,410.30 = 7,486,459,087.85/x - Step 3: Cross multiply
13,507,564,958.99x = 18,640,441,410.30 × 7,486,459,087.85 - Step 4: Simplify right side
13,507,564,958.99x = 139,550,901,997,756,039,168 - Step 5: Solve for x
x = 139,550,901,997,756,039,168/13,507,564,958.99 - Step 6: Final answer
x = 10,331,314,520.53
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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.