Finding the Fourth Proportional to 686,326.72, 1,029,139.08 and 286,858.48
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Solution
The fourth proportional to 686,326.72, 1,029,139.08 and 286,858.48 is: 430,141.02
Step by Step Solution
- Step 1: Write the proportion equation
686,326.72 : 1,029,139.08 = 286,858.48 : x - Step 2: Convert to fraction form
686,326.72/1,029,139.08 = 286,858.48/x - Step 3: Cross multiply
686,326.72x = 1,029,139.08 × 286,858.48 - Step 4: Simplify right side
686,326.72x = 295,217,272,197.40 - Step 5: Solve for x
x = 295,217,272,197.40/686,326.72 - Step 6: Final answer
x = 430,141.02
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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.