Finding the Fourth Proportional to 992,689.49, 1,369,939.14 and 557,133.86
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Solution
The fourth proportional to 992,689.49, 1,369,939.14 and 557,133.86 is: 768,860.24
Step by Step Solution
- Step 1: Write the proportion equation
992,689.49 : 1,369,939.14 = 557,133.86 : x - Step 2: Convert to fraction form
992,689.49/1,369,939.14 = 557,133.86/x - Step 3: Cross multiply
992,689.49x = 1,369,939.14 × 557,133.86 - Step 4: Simplify right side
992,689.49x = 763,239,484,458.13 - Step 5: Solve for x
x = 763,239,484,458.13/992,689.49 - Step 6: Final answer
x = 768,860.24
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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.