Finding the Fourth Proportional to 644,876.25, 889,652.88 and 402,738.63
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Solution
The fourth proportional to 644,876.25, 889,652.88 and 402,738.63 is: 555,606.73
Step by Step Solution
- Step 1: Write the proportion equation
644,876.25 : 889,652.88 = 402,738.63 : x - Step 2: Convert to fraction form
644,876.25/889,652.88 = 402,738.63/x - Step 3: Cross multiply
644,876.25x = 889,652.88 × 402,738.63 - Step 4: Simplify right side
644,876.25x = 358,297,582,066.75 - Step 5: Solve for x
x = 358,297,582,066.75/644,876.25 - Step 6: Final answer
x = 555,606.73
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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.