Finding the Fourth Proportional to 1,539,651,244.80, 2,309,476,867.20 and 721,846,214.40
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Solution
The fourth proportional to 1,539,651,244.80, 2,309,476,867.20 and 721,846,214.40 is: 1,082,769,321.60
Step by Step Solution
- Step 1: Write the proportion equation
1,539,651,244.80 : 2,309,476,867.20 = 721,846,214.40 : x - Step 2: Convert to fraction form
1,539,651,244.80/2,309,476,867.20 = 721,846,214.40/x - Step 3: Cross multiply
1,539,651,244.80x = 2,309,476,867.20 × 721,846,214.40 - Step 4: Simplify right side
1,539,651,244.80x = 1,667,087,133,832,691,456 - Step 5: Solve for x
x = 1,667,087,133,832,691,456/1,539,651,244.80 - Step 6: Final answer
x = 1,082,769,321.60
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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.