Finding the Fourth Proportional to 711,585.84, 981,984.96 and 389,290.08
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Solution
The fourth proportional to 711,585.84, 981,984.96 and 389,290.08 is: 537,218.40
Step by Step Solution
- Step 1: Write the proportion equation
711,585.84 : 981,984.96 = 389,290.08 : x - Step 2: Convert to fraction form
711,585.84/981,984.96 = 389,290.08/x - Step 3: Cross multiply
711,585.84x = 981,984.96 × 389,290.08 - Step 4: Simplify right side
711,585.84x = 382,277,003,637.20 - Step 5: Solve for x
x = 382,277,003,637.20/711,585.84 - Step 6: Final answer
x = 537,218.40
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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.