Finding the Fourth Proportional to 644,233.96, 888,899.70 and 389,579.68
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Solution
The fourth proportional to 644,233.96, 888,899.70 and 389,579.68 is: 537,533.38
Step by Step Solution
- Step 1: Write the proportion equation
644,233.96 : 888,899.70 = 389,579.68 : x - Step 2: Convert to fraction form
644,233.96/888,899.70 = 389,579.68/x - Step 3: Cross multiply
644,233.96x = 888,899.70 × 389,579.68 - Step 4: Simplify right side
644,233.96x = 346,297,260,678.10 - Step 5: Solve for x
x = 346,297,260,678.10/644,233.96 - Step 6: Final answer
x = 537,533.38
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1.5x scale
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.