Finding the Fourth Proportional to 1,219,338.12, 1,681,590.06 and 789,169.80
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Solution
The fourth proportional to 1,219,338.12, 1,681,590.06 and 789,169.80 is: 1,088,344.63
Step by Step Solution
- Step 1: Write the proportion equation
1,219,338.12 : 1,681,590.06 = 789,169.80 : x - Step 2: Convert to fraction form
1,219,338.12/1,681,590.06 = 789,169.80/x - Step 3: Cross multiply
1,219,338.12x = 1,681,590.06 × 789,169.80 - Step 4: Simplify right side
1,219,338.12x = 1,327,060,091,332.19 - Step 5: Solve for x
x = 1,327,060,091,332.19/1,219,338.12 - Step 6: Final answer
x = 1,088,344.63
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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.