Finding the Fourth Proportional to 555,328.19, 765,780.12 and 475,021.55
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Solution
The fourth proportional to 555,328.19, 765,780.12 and 475,021.55 is: 655,039.79
Step by Step Solution
- Step 1: Write the proportion equation
555,328.19 : 765,780.12 = 475,021.55 : x - Step 2: Convert to fraction form
555,328.19/765,780.12 = 475,021.55/x - Step 3: Cross multiply
555,328.19x = 765,780.12 × 475,021.55 - Step 4: Simplify right side
555,328.19x = 363,762,055,732.69 - Step 5: Solve for x
x = 363,762,055,732.69/555,328.19 - Step 6: Final answer
x = 655,039.79
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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.