Finding the Fourth Proportional to 644,824.08, 889,878.84 and 358,356.24
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Solution
The fourth proportional to 644,824.08, 889,878.84 and 358,356.24 is: 494,543.62
Step by Step Solution
- Step 1: Write the proportion equation
644,824.08 : 889,878.84 = 358,356.24 : x - Step 2: Convert to fraction form
644,824.08/889,878.84 = 358,356.24/x - Step 3: Cross multiply
644,824.08x = 889,878.84 × 358,356.24 - Step 4: Simplify right side
644,824.08x = 318,893,635,157.96 - Step 5: Solve for x
x = 318,893,635,157.96/644,824.08 - Step 6: Final answer
x = 494,543.62
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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.