Finding the Fourth Proportional to 686,219.76, 1,029,503.88 and 206,444.88
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Solution
The fourth proportional to 686,219.76, 1,029,503.88 and 206,444.88 is: 309,719.74
Step by Step Solution
- Step 1: Write the proportion equation
686,219.76 : 1,029,503.88 = 206,444.88 : x - Step 2: Convert to fraction form
686,219.76/1,029,503.88 = 206,444.88/x - Step 3: Cross multiply
686,219.76x = 1,029,503.88 × 206,444.88 - Step 4: Simplify right side
686,219.76x = 212,535,804,966.13 - Step 5: Solve for x
x = 212,535,804,966.13/686,219.76 - Step 6: Final answer
x = 309,719.74
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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.