Finding the Fourth Proportional to 1,288,536.18, 1,779,069.60 and 805,318.54
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Solution
The fourth proportional to 1,288,536.18, 1,779,069.60 and 805,318.54 is: 1,111,895.62
Step by Step Solution
- Step 1: Write the proportion equation
1,288,536.18 : 1,779,069.60 = 805,318.54 : x - Step 2: Convert to fraction form
1,288,536.18/1,779,069.60 = 805,318.54/x - Step 3: Cross multiply
1,288,536.18x = 1,779,069.60 × 805,318.54 - Step 4: Simplify right side
1,288,536.18x = 1,432,717,732,830.38 - Step 5: Solve for x
x = 1,432,717,732,830.38/1,288,536.18 - Step 6: Final answer
x = 1,111,895.62
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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.