Finding the Fourth Proportional to 715,925.16, 987,950.16 and 393,616.08
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Solution
The fourth proportional to 715,925.16, 987,950.16 and 393,616.08 is: 543,175.59
Step by Step Solution
- Step 1: Write the proportion equation
715,925.16 : 987,950.16 = 393,616.08 : x - Step 2: Convert to fraction form
715,925.16/987,950.16 = 393,616.08/x - Step 3: Cross multiply
715,925.16x = 987,950.16 × 393,616.08 - Step 4: Simplify right side
715,925.16x = 388,873,069,214.57 - Step 5: Solve for x
x = 388,873,069,214.57/715,925.16 - Step 6: Final answer
x = 543,175.59
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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.