Finding the Fourth Proportional to 1,252,421.31, 1,728,344.75 and 679,461.49
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Solution
The fourth proportional to 1,252,421.31, 1,728,344.75 and 679,461.49 is: 937,658.67
Step by Step Solution
- Step 1: Write the proportion equation
1,252,421.31 : 1,728,344.75 = 679,461.49 : x - Step 2: Convert to fraction form
1,252,421.31/1,728,344.75 = 679,461.49/x - Step 3: Cross multiply
1,252,421.31x = 1,728,344.75 × 679,461.49 - Step 4: Simplify right side
1,252,421.31x = 1,174,343,699,068.68 - Step 5: Solve for x
x = 1,174,343,699,068.68/1,252,421.31 - Step 6: Final answer
x = 937,658.67
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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.