Finding the Fourth Proportional to 644,344.30, 889,206.12 and 353,968.12
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Solution
The fourth proportional to 644,344.30, 889,206.12 and 353,968.12 is: 488,482.04
Step by Step Solution
- Step 1: Write the proportion equation
644,344.30 : 889,206.12 = 353,968.12 : x - Step 2: Convert to fraction form
644,344.30/889,206.12 = 353,968.12/x - Step 3: Cross multiply
644,344.30x = 889,206.12 × 353,968.12 - Step 4: Simplify right side
644,344.30x = 314,750,618,588.89 - Step 5: Solve for x
x = 314,750,618,588.89/644,344.30 - Step 6: Final answer
x = 488,482.04
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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.