Finding the Fourth Proportional to 1,257,344,540.67, 1,735,227,172.79 and 728,844,968.19
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Solution
The fourth proportional to 1,257,344,540.67, 1,735,227,172.79 and 728,844,968.19 is: 1,005,859,215.71
Step by Step Solution
- Step 1: Write the proportion equation
1,257,344,540.67 : 1,735,227,172.79 = 728,844,968.19 : x - Step 2: Convert to fraction form
1,257,344,540.67/1,735,227,172.79 = 728,844,968.19/x - Step 3: Cross multiply
1,257,344,540.67x = 1,735,227,172.79 × 728,844,968.19 - Step 4: Simplify right side
1,257,344,540.67x = 1,264,711,593,550,907,136 - Step 5: Solve for x
x = 1,264,711,593,550,907,136/1,257,344,540.67 - Step 6: Final answer
x = 1,005,859,215.71
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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.