Finding the Fourth Proportional to 644,310.64, 889,593.48 and 402,701.80
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Solution
The fourth proportional to 644,310.64, 889,593.48 and 402,701.80 is: 556,006.49
Step by Step Solution
- Step 1: Write the proportion equation
644,310.64 : 889,593.48 = 402,701.80 : x - Step 2: Convert to fraction form
644,310.64/889,593.48 = 402,701.80/x - Step 3: Cross multiply
644,310.64x = 889,593.48 × 402,701.80 - Step 4: Simplify right side
644,310.64x = 358,240,895,664.26 - Step 5: Solve for x
x = 358,240,895,664.26/644,310.64 - Step 6: Final answer
x = 556,006.49
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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.