Finding the Fourth Proportional to 431,093,143.80, 646,639,715.70 and 405,583,975.80
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Solution
The fourth proportional to 431,093,143.80, 646,639,715.70 and 405,583,975.80 is: 608,375,963.70
Step by Step Solution
- Step 1: Write the proportion equation
431,093,143.80 : 646,639,715.70 = 405,583,975.80 : x - Step 2: Convert to fraction form
431,093,143.80/646,639,715.70 = 405,583,975.80/x - Step 3: Cross multiply
431,093,143.80x = 646,639,715.70 × 405,583,975.80 - Step 4: Simplify right side
431,093,143.80x = 262,266,706,803,787,712 - Step 5: Solve for x
x = 262,266,706,803,787,712/431,093,143.80 - Step 6: Final answer
x = 608,375,963.70
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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.