Finding the Fourth Proportional to 807,423,915.20, 1,211,702,743.20 and 347,692,020.80
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Solution
The fourth proportional to 807,423,915.20, 1,211,702,743.20 and 347,692,020.80 is: 521,782,136.32
Step by Step Solution
- Step 1: Write the proportion equation
807,423,915.20 : 1,211,702,743.20 = 347,692,020.80 : x - Step 2: Convert to fraction form
807,423,915.20/1,211,702,743.20 = 347,692,020.80/x - Step 3: Cross multiply
807,423,915.20x = 1,211,702,743.20 × 347,692,020.80 - Step 4: Simplify right side
807,423,915.20x = 421,299,375,392,111,488 - Step 5: Solve for x
x = 421,299,375,392,111,488/807,423,915.20 - Step 6: Final answer
x = 521,782,136.32
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.