Finding the Fourth Proportional to 763,909.20, 1,146,243.96 and 578,060.88
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Solution
The fourth proportional to 763,909.20, 1,146,243.96 and 578,060.88 is: 867,378.99
Step by Step Solution
- Step 1: Write the proportion equation
763,909.20 : 1,146,243.96 = 578,060.88 : x - Step 2: Convert to fraction form
763,909.20/1,146,243.96 = 578,060.88/x - Step 3: Cross multiply
763,909.20x = 1,146,243.96 × 578,060.88 - Step 4: Simplify right side
763,909.20x = 662,598,792,212.29 - Step 5: Solve for x
x = 662,598,792,212.29/763,909.20 - Step 6: Final answer
x = 867,378.99
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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.