Finding the Fourth Proportional to 1,329,698,725.20, 1,994,548,087.80 and 360,350,341.20
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Solution
The fourth proportional to 1,329,698,725.20, 1,994,548,087.80 and 360,350,341.20 is: 540,525,511.80
Step by Step Solution
- Step 1: Write the proportion equation
1,329,698,725.20 : 1,994,548,087.80 = 360,350,341.20 : x - Step 2: Convert to fraction form
1,329,698,725.20/1,994,548,087.80 = 360,350,341.20/x - Step 3: Cross multiply
1,329,698,725.20x = 1,994,548,087.80 × 360,350,341.20 - Step 4: Simplify right side
1,329,698,725.20x = 718,736,083,978,537,472 - Step 5: Solve for x
x = 718,736,083,978,537,472/1,329,698,725.20 - Step 6: Final answer
x = 540,525,511.80
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Similar ratio
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1.5x scale
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.