Finding the Fourth Proportional to 1,296,128.70, 1,944,193.05 and 1,243,640.70
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Solution
The fourth proportional to 1,296,128.70, 1,944,193.05 and 1,243,640.70 is: 1,865,461.05
Step by Step Solution
- Step 1: Write the proportion equation
1,296,128.70 : 1,944,193.05 = 1,243,640.70 : x - Step 2: Convert to fraction form
1,296,128.70/1,944,193.05 = 1,243,640.70/x - Step 3: Cross multiply
1,296,128.70x = 1,944,193.05 × 1,243,640.70 - Step 4: Simplify right side
1,296,128.70x = 2,417,877,605,637.13 - Step 5: Solve for x
x = 2,417,877,605,637.13/1,296,128.70 - Step 6: Final answer
x = 1,865,461.05
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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.