Finding the Fourth Proportional to 715,559.40, 987,490.08 and 393,277.68
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Solution
The fourth proportional to 715,559.40, 987,490.08 and 393,277.68 is: 542,733.15
Step by Step Solution
- Step 1: Write the proportion equation
715,559.40 : 987,490.08 = 393,277.68 : x - Step 2: Convert to fraction form
715,559.40/987,490.08 = 393,277.68/x - Step 3: Cross multiply
715,559.40x = 987,490.08 × 393,277.68 - Step 4: Simplify right side
715,559.40x = 388,357,807,685.41 - Step 5: Solve for x
x = 388,357,807,685.41/715,559.40 - Step 6: Final answer
x = 542,733.15
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1.5x scale
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.