Finding the Fourth Proportional to 513,039,591.19, 707,975,668.36 and 278,085,207.13
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Solution
The fourth proportional to 513,039,591.19, 707,975,668.36 and 278,085,207.13 is: 383,747,304.81
Step by Step Solution
- Step 1: Write the proportion equation
513,039,591.19 : 707,975,668.36 = 278,085,207.13 : x - Step 2: Convert to fraction form
513,039,591.19/707,975,668.36 = 278,085,207.13/x - Step 3: Cross multiply
513,039,591.19x = 707,975,668.36 × 278,085,207.13 - Step 4: Simplify right side
513,039,591.19x = 196,877,560,378,890,784 - Step 5: Solve for x
x = 196,877,560,378,890,784/513,039,591.19 - Step 6: Final answer
x = 383,747,304.81
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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.