Finding the Fourth Proportional to 515,909.49, 711,955.08 and 289,554.99
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Solution
The fourth proportional to 515,909.49, 711,955.08 and 289,554.99 is: 399,585.88
Step by Step Solution
- Step 1: Write the proportion equation
515,909.49 : 711,955.08 = 289,554.99 : x - Step 2: Convert to fraction form
515,909.49/711,955.08 = 289,554.99/x - Step 3: Cross multiply
515,909.49x = 711,955.08 × 289,554.99 - Step 4: Simplify right side
515,909.49x = 206,150,146,069.85 - Step 5: Solve for x
x = 206,150,146,069.85/515,909.49 - Step 6: Final answer
x = 399,585.88
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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.