Finding the Fourth Proportional to 686,917.08, 948,414.74 and 429,186.42
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Solution
The fourth proportional to 686,917.08, 948,414.74 and 429,186.42 is: 592,570.39
Step by Step Solution
- Step 1: Write the proportion equation
686,917.08 : 948,414.74 = 429,186.42 : x - Step 2: Convert to fraction form
686,917.08/948,414.74 = 429,186.42/x - Step 3: Cross multiply
686,917.08x = 948,414.74 × 429,186.42 - Step 4: Simplify right side
686,917.08x = 407,046,724,789.90 - Step 5: Solve for x
x = 407,046,724,789.90/686,917.08 - Step 6: Final answer
x = 592,570.39
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1.5x scale
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.