Finding the Fourth Proportional to 1,007,748.12, 1,390,628.58 and 555,039.12
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Solution
The fourth proportional to 1,007,748.12, 1,390,628.58 and 555,039.12 is: 765,918.83
Step by Step Solution
- Step 1: Write the proportion equation
1,007,748.12 : 1,390,628.58 = 555,039.12 : x - Step 2: Convert to fraction form
1,007,748.12/1,390,628.58 = 555,039.12/x - Step 3: Cross multiply
1,007,748.12x = 1,390,628.58 × 555,039.12 - Step 4: Simplify right side
1,007,748.12x = 771,853,263,290.05 - Step 5: Solve for x
x = 771,853,263,290.05/1,007,748.12 - Step 6: Final answer
x = 765,918.83
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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.