Finding the Fourth Proportional to 490,809.84, 678,525.12 and 486,319.20
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Solution
The fourth proportional to 490,809.84, 678,525.12 and 486,319.20 is: 672,316.99
Step by Step Solution
- Step 1: Write the proportion equation
490,809.84 : 678,525.12 = 486,319.20 : x - Step 2: Convert to fraction form
490,809.84/678,525.12 = 486,319.20/x - Step 3: Cross multiply
490,809.84x = 678,525.12 × 486,319.20 - Step 4: Simplify right side
490,809.84x = 329,979,793,538.30 - Step 5: Solve for x
x = 329,979,793,538.30/490,809.84 - Step 6: Final answer
x = 672,316.99
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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.