Finding the Fourth Proportional to 1,398,368.60, 1,929,729.57 and 786,521.18
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Solution
The fourth proportional to 1,398,368.60, 1,929,729.57 and 786,521.18 is: 1,085,388.48
Step by Step Solution
- Step 1: Write the proportion equation
1,398,368.60 : 1,929,729.57 = 786,521.18 : x - Step 2: Convert to fraction form
1,398,368.60/1,929,729.57 = 786,521.18/x - Step 3: Cross multiply
1,398,368.60x = 1,929,729.57 × 786,521.18 - Step 4: Simplify right side
1,398,368.60x = 1,517,773,176,065.13 - Step 5: Solve for x
x = 1,517,773,176,065.13/1,398,368.60 - Step 6: Final answer
x = 1,085,388.48
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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.