Finding the Fourth Proportional to 1,128,548.79, 1,557,397.34 and 645,124.73
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Solution
The fourth proportional to 1,128,548.79, 1,557,397.34 and 645,124.73 is: 890,272.12
Step by Step Solution
- Step 1: Write the proportion equation
1,128,548.79 : 1,557,397.34 = 645,124.73 : x - Step 2: Convert to fraction form
1,128,548.79/1,557,397.34 = 645,124.73/x - Step 3: Cross multiply
1,128,548.79x = 1,557,397.34 × 645,124.73 - Step 4: Simplify right side
1,128,548.79x = 1,004,715,527,457.61 - Step 5: Solve for x
x = 1,004,715,527,457.61/1,128,548.79 - Step 6: Final answer
x = 890,272.12
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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.