Finding the Fourth Proportional to 688,138.11, 1,032,545.34 and 309,326.49
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Solution
The fourth proportional to 688,138.11, 1,032,545.34 and 309,326.49 is: 464,141.75
Step by Step Solution
- Step 1: Write the proportion equation
688,138.11 : 1,032,545.34 = 309,326.49 : x - Step 2: Convert to fraction form
688,138.11/1,032,545.34 = 309,326.49/x - Step 3: Cross multiply
688,138.11x = 1,032,545.34 × 309,326.49 - Step 4: Simplify right side
688,138.11x = 319,393,625,788.06 - Step 5: Solve for x
x = 319,393,625,788.06/688,138.11 - Step 6: Final answer
x = 464,141.75
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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.