Finding the Fourth Proportional to 1,911,302.21, 2,638,115.19 and 1,127,053.06
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Solution
The fourth proportional to 1,911,302.21, 2,638,115.19 and 1,127,053.06 is: 1,555,638.75
Step by Step Solution
- Step 1: Write the proportion equation
1,911,302.21 : 2,638,115.19 = 1,127,053.06 : x - Step 2: Convert to fraction form
1,911,302.21/2,638,115.19 = 1,127,053.06/x - Step 3: Cross multiply
1,911,302.21x = 2,638,115.19 × 1,127,053.06 - Step 4: Simplify right side
1,911,302.21x = 2,973,295,790,926.69 - Step 5: Solve for x
x = 2,973,295,790,926.69/1,911,302.21 - Step 6: Final answer
x = 1,555,638.75
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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.