Finding the Fourth Proportional to 1,119,643,229.80, 1,678,233,126.30 and 392,257,527.40
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Solution
The fourth proportional to 1,119,643,229.80, 1,678,233,126.30 and 392,257,527.40 is: 587,954,768.99
Step by Step Solution
- Step 1: Write the proportion equation
1,119,643,229.80 : 1,678,233,126.30 = 392,257,527.40 : x - Step 2: Convert to fraction form
1,119,643,229.80/1,678,233,126.30 = 392,257,527.40/x - Step 3: Cross multiply
1,119,643,229.80x = 1,678,233,126.30 × 392,257,527.40 - Step 4: Simplify right side
1,119,643,229.80x = 658,299,576,523,209,856 - Step 5: Solve for x
x = 658,299,576,523,209,856/1,119,643,229.80 - Step 6: Final answer
x = 587,954,768.99
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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.