Finding the Fourth Proportional to 1,128,547.11, 1,557,390.74 and 619,257.99
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Solution
The fourth proportional to 1,128,547.11, 1,557,390.74 and 619,257.99 is: 854,573.68
Step by Step Solution
- Step 1: Write the proportion equation
1,128,547.11 : 1,557,390.74 = 619,257.99 : x - Step 2: Convert to fraction form
1,128,547.11/1,557,390.74 = 619,257.99/x - Step 3: Cross multiply
1,128,547.11x = 1,557,390.74 × 619,257.99 - Step 4: Simplify right side
1,128,547.11x = 964,426,656,200.72 - Step 5: Solve for x
x = 964,426,656,200.72/1,128,547.11 - Step 6: Final answer
x = 854,573.68
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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.