Finding the Fourth Proportional to 1,128,306.51, 1,557,062.88 and 638,265.56
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Solution
The fourth proportional to 1,128,306.51, 1,557,062.88 and 638,265.56 is: 880,806.41
Step by Step Solution
- Step 1: Write the proportion equation
1,128,306.51 : 1,557,062.88 = 638,265.56 : x - Step 2: Convert to fraction form
1,128,306.51/1,557,062.88 = 638,265.56/x - Step 3: Cross multiply
1,128,306.51x = 1,557,062.88 × 638,265.56 - Step 4: Simplify right side
1,128,306.51x = 993,819,611,058.41 - Step 5: Solve for x
x = 993,819,611,058.41/1,128,306.51 - Step 6: Final answer
x = 880,806.41
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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.