Finding the Fourth Proportional to 913,728.96, 1,258,129.52 and 811,576.93
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Solution
The fourth proportional to 913,728.96, 1,258,129.52 and 811,576.93 is: 1,117,474.59
Step by Step Solution
- Step 1: Write the proportion equation
913,728.96 : 1,258,129.52 = 811,576.93 : x - Step 2: Convert to fraction form
913,728.96/1,258,129.52 = 811,576.93/x - Step 3: Cross multiply
913,728.96x = 1,258,129.52 × 811,576.93 - Step 4: Simplify right side
913,728.96x = 1,021,068,893,383.97 - Step 5: Solve for x
x = 1,021,068,893,383.97/913,728.96 - Step 6: Final answer
x = 1,117,474.59
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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.