Finding the Fourth Proportional to 644,341.80, 889,202.67 and 353,965.62
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Solution
The fourth proportional to 644,341.80, 889,202.67 and 353,965.62 is: 488,478.59
Step by Step Solution
- Step 1: Write the proportion equation
644,341.80 : 889,202.67 = 353,965.62 : x - Step 2: Convert to fraction form
644,341.80/889,202.67 = 353,965.62/x - Step 3: Cross multiply
644,341.80x = 889,202.67 × 353,965.62 - Step 4: Simplify right side
644,341.80x = 314,747,174,392.21 - Step 5: Solve for x
x = 314,747,174,392.21/644,341.80 - Step 6: Final answer
x = 488,478.59
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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.