Finding the Fourth Proportional to 513,039,607.05, 707,975,690.20 and 278,085,222.99
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Solution
The fourth proportional to 513,039,607.05, 707,975,690.20 and 278,085,222.99 is: 383,747,326.67
Step by Step Solution
- Step 1: Write the proportion equation
513,039,607.05 : 707,975,690.20 = 278,085,222.99 : x - Step 2: Convert to fraction form
513,039,607.05/707,975,690.20 = 278,085,222.99/x - Step 3: Cross multiply
513,039,607.05x = 707,975,690.20 × 278,085,222.99 - Step 4: Simplify right side
513,039,607.05x = 196,877,577,680,766,176 - Step 5: Solve for x
x = 196,877,577,680,766,176/513,039,607.05 - Step 6: Final answer
x = 383,747,326.67
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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.