Finding the Fourth Proportional to 1,091,293,691.90, 1,637,076,672.99 and 427,221,932.09
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Solution
The fourth proportional to 1,091,293,691.90, 1,637,076,672.99 and 427,221,932.09 is: 640,886,192.60
Step by Step Solution
- Step 1: Write the proportion equation
1,091,293,691.90 : 1,637,076,672.99 = 427,221,932.09 : x - Step 2: Convert to fraction form
1,091,293,691.90/1,637,076,672.99 = 427,221,932.09/x - Step 3: Cross multiply
1,091,293,691.90x = 1,637,076,672.99 × 427,221,932.09 - Step 4: Simplify right side
1,091,293,691.90x = 699,395,059,213,520,256 - Step 5: Solve for x
x = 699,395,059,213,520,256/1,091,293,691.90 - Step 6: Final answer
x = 640,886,192.60
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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.