Finding the Fourth Proportional to 1,338,220,330.84, 2,007,107,853.06 and 405,321,378.15
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Solution
The fourth proportional to 1,338,220,330.84, 2,007,107,853.06 and 405,321,378.15 is: 607,914,632.85
Step by Step Solution
- Step 1: Write the proportion equation
1,338,220,330.84 : 2,007,107,853.06 = 405,321,378.15 : x - Step 2: Convert to fraction form
1,338,220,330.84/2,007,107,853.06 = 405,321,378.15/x - Step 3: Cross multiply
1,338,220,330.84x = 2,007,107,853.06 × 405,321,378.15 - Step 4: Simplify right side
1,338,220,330.84x = 813,523,721,097,966,848 - Step 5: Solve for x
x = 813,523,721,097,966,848/1,338,220,330.84 - Step 6: Final answer
x = 607,914,632.85
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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.