Finding the Fourth Proportional to 1,128,824.64, 1,557,779.07 and 645,399.91
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Solution
The fourth proportional to 1,128,824.64, 1,557,779.07 and 645,399.91 is: 890,652.48
Step by Step Solution
- Step 1: Write the proportion equation
1,128,824.64 : 1,557,779.07 = 645,399.91 : x - Step 2: Convert to fraction form
1,128,824.64/1,557,779.07 = 645,399.91/x - Step 3: Cross multiply
1,128,824.64x = 1,557,779.07 × 645,399.91 - Step 4: Simplify right side
1,128,824.64x = 1,005,390,468,350.88 - Step 5: Solve for x
x = 1,005,390,468,350.88/1,128,824.64 - Step 6: Final answer
x = 890,652.48
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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.