Finding the Fourth Proportional to 646,128.43, 891,740.91 and 370,593.77
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Solution
The fourth proportional to 646,128.43, 891,740.91 and 370,593.77 is: 511,467.40
Step by Step Solution
- Step 1: Write the proportion equation
646,128.43 : 891,740.91 = 370,593.77 : x - Step 2: Convert to fraction form
646,128.43/891,740.91 = 370,593.77/x - Step 3: Cross multiply
646,128.43x = 891,740.91 × 370,593.77 - Step 4: Simplify right side
646,128.43x = 330,473,625,700.13 - Step 5: Solve for x
x = 330,473,625,700.13/646,128.43 - Step 6: Final answer
x = 511,467.40
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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.