Finding the Fourth Proportional to 658,685,385.71, 908,987,211.99 and 361,330,029.13
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Solution
The fourth proportional to 658,685,385.71, 908,987,211.99 and 361,330,029.13 is: 498,636,197.05
Step by Step Solution
- Step 1: Write the proportion equation
658,685,385.71 : 908,987,211.99 = 361,330,029.13 : x - Step 2: Convert to fraction form
658,685,385.71/908,987,211.99 = 361,330,029.13/x - Step 3: Cross multiply
658,685,385.71x = 908,987,211.99 × 361,330,029.13 - Step 4: Simplify right side
658,685,385.71x = 328,444,375,780,792,576 - Step 5: Solve for x
x = 328,444,375,780,792,576/658,685,385.71 - Step 6: Final answer
x = 498,636,197.05
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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.