Finding the Fourth Proportional to 815,691.35, 1,223,537.49 and 310,135.52
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Solution
The fourth proportional to 815,691.35, 1,223,537.49 and 310,135.52 is: 465,203.45
Step by Step Solution
- Step 1: Write the proportion equation
815,691.35 : 1,223,537.49 = 310,135.52 : x - Step 2: Convert to fraction form
815,691.35/1,223,537.49 = 310,135.52/x - Step 3: Cross multiply
815,691.35x = 1,223,537.49 × 310,135.52 - Step 4: Simplify right side
815,691.35x = 379,462,429,582.96 - Step 5: Solve for x
x = 379,462,429,582.96/815,691.35 - Step 6: Final answer
x = 465,203.45
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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.