Finding the Fourth Proportional to 763,627.12, 1,053,743.94 and 441,358.09
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Solution
The fourth proportional to 763,627.12, 1,053,743.94 and 441,358.09 is: 609,038.63
Step by Step Solution
- Step 1: Write the proportion equation
763,627.12 : 1,053,743.94 = 441,358.09 : x - Step 2: Convert to fraction form
763,627.12/1,053,743.94 = 441,358.09/x - Step 3: Cross multiply
763,627.12x = 1,053,743.94 × 441,358.09 - Step 4: Simplify right side
763,627.12x = 465,078,412,707.48 - Step 5: Solve for x
x = 465,078,412,707.48/763,627.12 - Step 6: Final answer
x = 609,038.63
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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.