Finding the Fourth Proportional to 512,630.31, 707,429.28 and 286,275.99
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Solution
The fourth proportional to 512,630.31, 707,429.28 and 286,275.99 is: 395,060.56
Step by Step Solution
- Step 1: Write the proportion equation
512,630.31 : 707,429.28 = 286,275.99 : x - Step 2: Convert to fraction form
512,630.31/707,429.28 = 286,275.99/x - Step 3: Cross multiply
512,630.31x = 707,429.28 × 286,275.99 - Step 4: Simplify right side
512,630.31x = 202,520,017,486.99 - Step 5: Solve for x
x = 202,520,017,486.99/512,630.31 - Step 6: Final answer
x = 395,060.56
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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.