Finding the Fourth Proportional to 515,707.99, 711,689.30 and 289,370.23
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Solution
The fourth proportional to 515,707.99, 711,689.30 and 289,370.23 is: 399,337.80
Step by Step Solution
- Step 1: Write the proportion equation
515,707.99 : 711,689.30 = 289,370.23 : x - Step 2: Convert to fraction form
515,707.99/711,689.30 = 289,370.23/x - Step 3: Cross multiply
515,707.99x = 711,689.30 × 289,370.23 - Step 4: Simplify right side
515,707.99x = 205,941,696,429.54 - Step 5: Solve for x
x = 205,941,696,429.54/515,707.99 - Step 6: Final answer
x = 399,337.80
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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.