Finding the Fourth Proportional to 752,176.69, 1,128,431.12 and 278,862.10
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Solution
The fourth proportional to 752,176.69, 1,128,431.12 and 278,862.10 is: 418,354.72
Step by Step Solution
- Step 1: Write the proportion equation
752,176.69 : 1,128,431.12 = 278,862.10 : x - Step 2: Convert to fraction form
752,176.69/1,128,431.12 = 278,862.10/x - Step 3: Cross multiply
752,176.69x = 1,128,431.12 × 278,862.10 - Step 4: Simplify right side
752,176.69x = 314,676,667,613.16 - Step 5: Solve for x
x = 314,676,667,613.16/752,176.69 - Step 6: Final answer
x = 418,354.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.