Finding the Fourth Proportional to 1,243,234,026.97, 1,715,668,437.01 and 686,321,650.33
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Solution
The fourth proportional to 1,243,234,026.97, 1,715,668,437.01 and 686,321,650.33 is: 947,126,902.55
Step by Step Solution
- Step 1: Write the proportion equation
1,243,234,026.97 : 1,715,668,437.01 = 686,321,650.33 : x - Step 2: Convert to fraction form
1,243,234,026.97/1,715,668,437.01 = 686,321,650.33/x - Step 3: Cross multiply
1,243,234,026.97x = 1,715,668,437.01 × 686,321,650.33 - Step 4: Simplify right side
1,243,234,026.97x = 1,177,500,393,107,794,944 - Step 5: Solve for x
x = 1,177,500,393,107,794,944/1,243,234,026.97 - Step 6: Final answer
x = 947,126,902.55
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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.