Finding the Fourth Proportional to 1,236,424.80, 1,854,637.20 and 1,124,231.70
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Solution
The fourth proportional to 1,236,424.80, 1,854,637.20 and 1,124,231.70 is: 1,686,347.55
Step by Step Solution
- Step 1: Write the proportion equation
1,236,424.80 : 1,854,637.20 = 1,124,231.70 : x - Step 2: Convert to fraction form
1,236,424.80/1,854,637.20 = 1,124,231.70/x - Step 3: Cross multiply
1,236,424.80x = 1,854,637.20 × 1,124,231.70 - Step 4: Simplify right side
1,236,424.80x = 2,085,041,932,239.24 - Step 5: Solve for x
x = 2,085,041,932,239.24/1,236,424.80 - Step 6: Final answer
x = 1,686,347.55
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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.