Finding the Fourth Proportional to 715,735.84, 987,718.66 and 393,466.70
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Solution
The fourth proportional to 715,735.84, 987,718.66 and 393,466.70 is: 542,985.81
Step by Step Solution
- Step 1: Write the proportion equation
715,735.84 : 987,718.66 = 393,466.70 : x - Step 2: Convert to fraction form
715,735.84/987,718.66 = 393,466.70/x - Step 3: Cross multiply
715,735.84x = 987,718.66 × 393,466.70 - Step 4: Simplify right side
715,735.84x = 388,634,401,678.62 - Step 5: Solve for x
x = 388,634,401,678.62/715,735.84 - Step 6: Final answer
x = 542,985.81
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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.