Finding the Fourth Proportional to 1,121,623.11, 1,547,781.35 and 612,227.07
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Solution
The fourth proportional to 1,121,623.11, 1,547,781.35 and 612,227.07 is: 844,841.40
Step by Step Solution
- Step 1: Write the proportion equation
1,121,623.11 : 1,547,781.35 = 612,227.07 : x - Step 2: Convert to fraction form
1,121,623.11/1,547,781.35 = 612,227.07/x - Step 3: Cross multiply
1,121,623.11x = 1,547,781.35 × 612,227.07 - Step 4: Simplify right side
1,121,623.11x = 947,593,637,850.01 - Step 5: Solve for x
x = 947,593,637,850.01/1,121,623.11 - Step 6: Final answer
x = 844,841.40
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1.5x scale
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.