Finding the Fourth Proportional to 1,387,299.49, 2,079,530.31 and 702,918.55
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Solution
The fourth proportional to 1,387,299.49, 2,079,530.31 and 702,918.55 is: 1,053,658.88
Step by Step Solution
- Step 1: Write the proportion equation
1,387,299.49 : 2,079,530.31 = 702,918.55 : x - Step 2: Convert to fraction form
1,387,299.49/2,079,530.31 = 702,918.55/x - Step 3: Cross multiply
1,387,299.49x = 2,079,530.31 × 702,918.55 - Step 4: Simplify right side
1,387,299.49x = 1,461,740,430,186.25 - Step 5: Solve for x
x = 1,461,740,430,186.25/1,387,299.49 - Step 6: Final answer
x = 1,053,658.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.