Finding the Fourth Proportional to 639,643.30, 882,701.79 and 353,165.42
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Solution
The fourth proportional to 639,643.30, 882,701.79 and 353,165.42 is: 487,364.99
Step by Step Solution
- Step 1: Write the proportion equation
639,643.30 : 882,701.79 = 353,165.42 : x - Step 2: Convert to fraction form
639,643.30/882,701.79 = 353,165.42/x - Step 3: Cross multiply
639,643.30x = 882,701.79 × 353,165.42 - Step 4: Simplify right side
639,643.30x = 311,739,748,400.10 - Step 5: Solve for x
x = 311,739,748,400.10/639,643.30 - Step 6: Final answer
x = 487,364.99
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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.