Finding the Fourth Proportional to 900,857.16, 1,243,163.70 and 492,957.36
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Solution
The fourth proportional to 900,857.16, 1,243,163.70 and 492,957.36 is: 680,270.66
Step by Step Solution
- Step 1: Write the proportion equation
900,857.16 : 1,243,163.70 = 492,957.36 : x - Step 2: Convert to fraction form
900,857.16/1,243,163.70 = 492,957.36/x - Step 3: Cross multiply
900,857.16x = 1,243,163.70 × 492,957.36 - Step 4: Simplify right side
900,857.16x = 612,826,695,599.83 - Step 5: Solve for x
x = 612,826,695,599.83/900,857.16 - Step 6: Final answer
x = 680,270.66
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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.