Finding the Fourth Proportional to 1,128,757.08, 1,555,128.19 and 1,074,948.67
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Solution
The fourth proportional to 1,128,757.08, 1,555,128.19 and 1,074,948.67 is: 1,480,994.46
Step by Step Solution
- Step 1: Write the proportion equation
1,128,757.08 : 1,555,128.19 = 1,074,948.67 : x - Step 2: Convert to fraction form
1,128,757.08/1,555,128.19 = 1,074,948.67/x - Step 3: Cross multiply
1,128,757.08x = 1,555,128.19 × 1,074,948.67 - Step 4: Simplify right side
1,128,757.08x = 1,671,682,979,520.01 - Step 5: Solve for x
x = 1,671,682,979,520.01/1,128,757.08 - Step 6: Final answer
x = 1,480,994.46
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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.