Finding the Fourth Proportional to 720,964.80, 1,081,447.20 and 657,979.20
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Solution
The fourth proportional to 720,964.80, 1,081,447.20 and 657,979.20 is: 986,968.80
Step by Step Solution
- Step 1: Write the proportion equation
720,964.80 : 1,081,447.20 = 657,979.20 : x - Step 2: Convert to fraction form
720,964.80/1,081,447.20 = 657,979.20/x - Step 3: Cross multiply
720,964.80x = 1,081,447.20 × 657,979.20 - Step 4: Simplify right side
720,964.80x = 711,569,763,498.24 - Step 5: Solve for x
x = 711,569,763,498.24/720,964.80 - Step 6: Final answer
x = 986,968.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.