Finding the Fourth Proportional to 1,287,469.29, 1,931,203.95 and 686,610.09
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Solution
The fourth proportional to 1,287,469.29, 1,931,203.95 and 686,610.09 is: 1,029,915.14
Step by Step Solution
- Step 1: Write the proportion equation
1,287,469.29 : 1,931,203.95 = 686,610.09 : x - Step 2: Convert to fraction form
1,287,469.29/1,931,203.95 = 686,610.09/x - Step 3: Cross multiply
1,287,469.29x = 1,931,203.95 × 686,610.09 - Step 4: Simplify right side
1,287,469.29x = 1,325,984,117,917.86 - Step 5: Solve for x
x = 1,325,984,117,917.86/1,287,469.29 - Step 6: Final answer
x = 1,029,915.14
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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.