Finding the Fourth Proportional to 1,219,143.05, 1,827,828.62 and 509,374.07
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Solution
The fourth proportional to 1,219,143.05, 1,827,828.62 and 509,374.07 is: 763,690.94
Step by Step Solution
- Step 1: Write the proportion equation
1,219,143.05 : 1,827,828.62 = 509,374.07 : x - Step 2: Convert to fraction form
1,219,143.05/1,827,828.62 = 509,374.07/x - Step 3: Cross multiply
1,219,143.05x = 1,827,828.62 × 509,374.07 - Step 4: Simplify right side
1,219,143.05x = 931,048,500,885.01 - Step 5: Solve for x
x = 931,048,500,885.01/1,219,143.05 - Step 6: Final answer
x = 763,690.94
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.