Finding the Fourth Proportional to 1,128,832.30, 1,557,789.58 and 612,586.19
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Solution
The fourth proportional to 1,128,832.30, 1,557,789.58 and 612,586.19 is: 845,369.49
Step by Step Solution
- Step 1: Write the proportion equation
1,128,832.30 : 1,557,789.58 = 612,586.19 : x - Step 2: Convert to fraction form
1,128,832.30/1,557,789.58 = 612,586.19/x - Step 3: Cross multiply
1,128,832.30x = 1,557,789.58 × 612,586.19 - Step 4: Simplify right side
1,128,832.30x = 954,280,389,155.59 - Step 5: Solve for x
x = 954,280,389,155.59/1,128,832.30 - Step 6: Final answer
x = 845,369.49
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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.