Finding the Fourth Proportional to 808,672.86, 1,115,259.57 and 647,469.09
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Solution
The fourth proportional to 808,672.86, 1,115,259.57 and 647,469.09 is: 892,939.70
Step by Step Solution
- Step 1: Write the proportion equation
808,672.86 : 1,115,259.57 = 647,469.09 : x - Step 2: Convert to fraction form
808,672.86/1,115,259.57 = 647,469.09/x - Step 3: Cross multiply
808,672.86x = 1,115,259.57 × 647,469.09 - Step 4: Simplify right side
808,672.86x = 722,096,098,901.69 - Step 5: Solve for x
x = 722,096,098,901.69/808,672.86 - Step 6: Final answer
x = 892,939.70
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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.