Finding the Fourth Proportional to 715,686.03, 987,647.58 and 393,389.26
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Solution
The fourth proportional to 715,686.03, 987,647.58 and 393,389.26 is: 542,877.65
Step by Step Solution
- Step 1: Write the proportion equation
715,686.03 : 987,647.58 = 393,389.26 : x - Step 2: Convert to fraction form
715,686.03/987,647.58 = 393,389.26/x - Step 3: Cross multiply
715,686.03x = 987,647.58 × 393,389.26 - Step 4: Simplify right side
715,686.03x = 388,529,948,167.87 - Step 5: Solve for x
x = 388,529,948,167.87/715,686.03 - Step 6: Final answer
x = 542,877.65
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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.