Finding the Fourth Proportional to 1,383,963.80, 1,909,871.24 and 772,116.68
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Solution
The fourth proportional to 1,383,963.80, 1,909,871.24 and 772,116.68 is: 1,065,521.68
Step by Step Solution
- Step 1: Write the proportion equation
1,383,963.80 : 1,909,871.24 = 772,116.68 : x - Step 2: Convert to fraction form
1,383,963.80/1,909,871.24 = 772,116.68/x - Step 3: Cross multiply
1,383,963.80x = 1,909,871.24 × 772,116.68 - Step 4: Simplify right side
1,383,963.80x = 1,474,643,427,646.34 - Step 5: Solve for x
x = 1,474,643,427,646.34/1,383,963.80 - Step 6: Final answer
x = 1,065,521.68
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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.