Finding the Fourth Proportional to 743,029,701.12, 1,025,381,643.39 and 408,507,915.06
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Solution
The fourth proportional to 743,029,701.12, 1,025,381,643.39 and 408,507,915.06 is: 563,741,283.36
Step by Step Solution
- Step 1: Write the proportion equation
743,029,701.12 : 1,025,381,643.39 = 408,507,915.06 : x - Step 2: Convert to fraction form
743,029,701.12/1,025,381,643.39 = 408,507,915.06/x - Step 3: Cross multiply
743,029,701.12x = 1,025,381,643.39 × 408,507,915.06 - Step 4: Simplify right side
743,029,701.12x = 418,876,517,282,045,312 - Step 5: Solve for x
x = 418,876,517,282,045,312/743,029,701.12 - Step 6: Final answer
x = 563,741,283.36
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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.