Finding the Fourth Proportional to 515,466,890.19, 711,367,732.71 and 303,782,654.97
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Solution
The fourth proportional to 515,466,890.19, 711,367,732.71 and 303,782,654.97 is: 419,233,868.59
Step by Step Solution
- Step 1: Write the proportion equation
515,466,890.19 : 711,367,732.71 = 303,782,654.97 : x - Step 2: Convert to fraction form
515,466,890.19/711,367,732.71 = 303,782,654.97/x - Step 3: Cross multiply
515,466,890.19x = 711,367,732.71 × 303,782,654.97 - Step 4: Simplify right side
515,466,890.19x = 216,101,178,505,482,624 - Step 5: Solve for x
x = 216,101,178,505,482,624/515,466,890.19 - Step 6: Final answer
x = 419,233,868.59
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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.