Finding the Fourth Proportional to 686,373.84, 1,029,209.52 and 286,905.60
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Solution
The fourth proportional to 686,373.84, 1,029,209.52 and 286,905.60 is: 430,211.58
Step by Step Solution
- Step 1: Write the proportion equation
686,373.84 : 1,029,209.52 = 286,905.60 : x - Step 2: Convert to fraction form
686,373.84/1,029,209.52 = 286,905.60/x - Step 3: Cross multiply
686,373.84x = 1,029,209.52 × 286,905.60 - Step 4: Simplify right side
686,373.84x = 295,285,974,861.31 - Step 5: Solve for x
x = 295,285,974,861.31/686,373.84 - Step 6: Final answer
x = 430,211.58
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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.