Finding the Fourth Proportional to 638,622.83, 881,279.39 and 352,154.99
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Solution
The fourth proportional to 638,622.83, 881,279.39 and 352,154.99 is: 485,962.79
Step by Step Solution
- Step 1: Write the proportion equation
638,622.83 : 881,279.39 = 352,154.99 : x - Step 2: Convert to fraction form
638,622.83/881,279.39 = 352,154.99/x - Step 3: Cross multiply
638,622.83x = 881,279.39 × 352,154.99 - Step 4: Simplify right side
638,622.83x = 310,346,933,011.88 - Step 5: Solve for x
x = 310,346,933,011.88/638,622.83 - Step 6: Final answer
x = 485,962.79
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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.