Finding the Fourth Proportional to 497,458.69, 686,603.79 and 316,135.26
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Solution
The fourth proportional to 497,458.69, 686,603.79 and 316,135.26 is: 436,337.07
Step by Step Solution
- Step 1: Write the proportion equation
497,458.69 : 686,603.79 = 316,135.26 : x - Step 2: Convert to fraction form
497,458.69/686,603.79 = 316,135.26/x - Step 3: Cross multiply
497,458.69x = 686,603.79 × 316,135.26 - Step 4: Simplify right side
497,458.69x = 217,059,667,668.64 - Step 5: Solve for x
x = 217,059,667,668.64/497,458.69 - Step 6: Final answer
x = 436,337.07
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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.