Finding the Fourth Proportional to 864,753,884.79, 1,193,445,720.50 and 493,531,455.03
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Solution
The fourth proportional to 864,753,884.79, 1,193,445,720.50 and 493,531,455.03 is: 681,122,124.22
Step by Step Solution
- Step 1: Write the proportion equation
864,753,884.79 : 1,193,445,720.50 = 493,531,455.03 : x - Step 2: Convert to fraction form
864,753,884.79/1,193,445,720.50 = 493,531,455.03/x - Step 3: Cross multiply
864,753,884.79x = 1,193,445,720.50 × 493,531,455.03 - Step 4: Simplify right side
864,753,884.79x = 589,003,002,935,223,936 - Step 5: Solve for x
x = 589,003,002,935,223,936/864,753,884.79 - Step 6: Final answer
x = 681,122,124.22
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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.