Finding the Fourth Proportional to 1,128,918.65, 1,557,908.55 and 612,672.41
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Solution
The fourth proportional to 1,128,918.65, 1,557,908.55 and 612,672.41 is: 845,488.37
Step by Step Solution
- Step 1: Write the proportion equation
1,128,918.65 : 1,557,908.55 = 612,672.41 : x - Step 2: Convert to fraction form
1,128,918.65/1,557,908.55 = 612,672.41/x - Step 3: Cross multiply
1,128,918.65x = 1,557,908.55 × 612,672.41 - Step 4: Simplify right side
1,128,918.65x = 954,487,585,888.11 - Step 5: Solve for x
x = 954,487,585,888.11/1,128,918.65 - Step 6: Final answer
x = 845,488.37
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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.