Finding the Fourth Proportional to 1,128,563.28, 1,557,357.84 and 645,064.56
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Solution
The fourth proportional to 1,128,563.28, 1,557,357.84 and 645,064.56 is: 890,155.09
Step by Step Solution
- Step 1: Write the proportion equation
1,128,563.28 : 1,557,357.84 = 645,064.56 : x - Step 2: Convert to fraction form
1,128,563.28/1,557,357.84 = 645,064.56/x - Step 3: Cross multiply
1,128,563.28x = 1,557,357.84 × 645,064.56 - Step 4: Simplify right side
1,128,563.28x = 1,004,596,349,822.15 - Step 5: Solve for x
x = 1,004,596,349,822.15/1,128,563.28 - Step 6: Final answer
x = 890,155.09
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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.