Finding the Fourth Proportional to 939,628.49, 1,296,688.16 and 509,908.62
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Solution
The fourth proportional to 939,628.49, 1,296,688.16 and 509,908.62 is: 703,674.36
Step by Step Solution
- Step 1: Write the proportion equation
939,628.49 : 1,296,688.16 = 509,908.62 : x - Step 2: Convert to fraction form
939,628.49/1,296,688.16 = 509,908.62/x - Step 3: Cross multiply
939,628.49x = 1,296,688.16 × 509,908.62 - Step 4: Simplify right side
939,628.49x = 661,192,471,510.71 - Step 5: Solve for x
x = 661,192,471,510.71/939,628.49 - Step 6: Final answer
x = 703,674.36
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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.