Finding the Fourth Proportional to 1,142,128.84, 1,575,548.19 and 774,481.66
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Solution
The fourth proportional to 1,142,128.84, 1,575,548.19 and 774,481.66 is: 1,068,384.87
Step by Step Solution
- Step 1: Write the proportion equation
1,142,128.84 : 1,575,548.19 = 774,481.66 : x - Step 2: Convert to fraction form
1,142,128.84/1,575,548.19 = 774,481.66/x - Step 3: Cross multiply
1,142,128.84x = 1,575,548.19 × 774,481.66 - Step 4: Simplify right side
1,142,128.84x = 1,220,233,177,601.20 - Step 5: Solve for x
x = 1,220,233,177,601.20/1,142,128.84 - Step 6: Final answer
x = 1,068,384.87
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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.