Finding the Fourth Proportional to 857,203.61, 1,285,805.34 and 288,536.99
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Solution
The fourth proportional to 857,203.61, 1,285,805.34 and 288,536.99 is: 432,805.45
Step by Step Solution
- Step 1: Write the proportion equation
857,203.61 : 1,285,805.34 = 288,536.99 : x - Step 2: Convert to fraction form
857,203.61/1,285,805.34 = 288,536.99/x - Step 3: Cross multiply
857,203.61x = 1,285,805.34 × 288,536.99 - Step 4: Simplify right side
857,203.61x = 371,002,396,100.50 - Step 5: Solve for x
x = 371,002,396,100.50/857,203.61 - Step 6: Final answer
x = 432,805.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.