Finding the Fourth Proportional to 686,733.80, 1,029,809.10 and 331,856.60
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Solution
The fourth proportional to 686,733.80, 1,029,809.10 and 331,856.60 is: 497,643.99
Step by Step Solution
- Step 1: Write the proportion equation
686,733.80 : 1,029,809.10 = 331,856.60 : x - Step 2: Convert to fraction form
686,733.80/1,029,809.10 = 331,856.60/x - Step 3: Cross multiply
686,733.80x = 1,029,809.10 × 331,856.60 - Step 4: Simplify right side
686,733.80x = 341,748,946,575.06 - Step 5: Solve for x
x = 341,748,946,575.06/686,733.80 - Step 6: Final answer
x = 497,643.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.