Finding the Fourth Proportional to 628,553.12, 867,386.68 and 342,067.05
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Solution
The fourth proportional to 628,553.12, 867,386.68 and 342,067.05 is: 472,043.48
Step by Step Solution
- Step 1: Write the proportion equation
628,553.12 : 867,386.68 = 342,067.05 : x - Step 2: Convert to fraction form
628,553.12/867,386.68 = 342,067.05/x - Step 3: Cross multiply
628,553.12x = 867,386.68 × 342,067.05 - Step 4: Simplify right side
628,553.12x = 296,704,401,981.73 - Step 5: Solve for x
x = 296,704,401,981.73/628,553.12 - Step 6: Final answer
x = 472,043.48
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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.