Finding the Fourth Proportional to 995,409,991.20, 1,492,915,921.20 and 477,839,431.20
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Solution
The fourth proportional to 995,409,991.20, 1,492,915,921.20 and 477,839,431.20 is: 716,663,586.79
Step by Step Solution
- Step 1: Write the proportion equation
995,409,991.20 : 1,492,915,921.20 = 477,839,431.20 : x - Step 2: Convert to fraction form
995,409,991.20/1,492,915,921.20 = 477,839,431.20/x - Step 3: Cross multiply
995,409,991.20x = 1,492,915,921.20 × 477,839,431.20 - Step 4: Simplify right side
995,409,991.20x = 713,374,094,615,632,000 - Step 5: Solve for x
x = 713,374,094,615,632,000/995,409,991.20 - Step 6: Final answer
x = 716,663,586.79
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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.