Finding the Fourth Proportional to 389,864.34, 585,029.79 and 358,138.26
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Solution
The fourth proportional to 389,864.34, 585,029.79 and 358,138.26 is: 537,421.69
Step by Step Solution
- Step 1: Write the proportion equation
389,864.34 : 585,029.79 = 358,138.26 : x - Step 2: Convert to fraction form
389,864.34/585,029.79 = 358,138.26/x - Step 3: Cross multiply
389,864.34x = 585,029.79 × 358,138.26 - Step 4: Simplify right side
389,864.34x = 209,521,551,038.77 - Step 5: Solve for x
x = 209,521,551,038.77/389,864.34 - Step 6: Final answer
x = 537,421.69
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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.