Finding the Fourth Proportional to 715,848.84, 987,874.80 and 393,579.80
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Solution
The fourth proportional to 715,848.84, 987,874.80 and 393,579.80 is: 543,141.99
Step by Step Solution
- Step 1: Write the proportion equation
715,848.84 : 987,874.80 = 393,579.80 : x - Step 2: Convert to fraction form
715,848.84/987,874.80 = 393,579.80/x - Step 3: Cross multiply
715,848.84x = 987,874.80 × 393,579.80 - Step 4: Simplify right side
715,848.84x = 388,807,566,209.04 - Step 5: Solve for x
x = 388,807,566,209.04/715,848.84 - Step 6: Final answer
x = 543,141.99
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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.