Finding the Fourth Proportional to 612,205.42, 916,780.87 and 386,886.10
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Solution
The fourth proportional to 612,205.42, 916,780.87 and 386,886.10 is: 579,363.99
Step by Step Solution
- Step 1: Write the proportion equation
612,205.42 : 916,780.87 = 386,886.10 : x - Step 2: Convert to fraction form
612,205.42/916,780.87 = 386,886.10/x - Step 3: Cross multiply
612,205.42x = 916,780.87 × 386,886.10 - Step 4: Simplify right side
612,205.42x = 354,689,775,348.91 - Step 5: Solve for x
x = 354,689,775,348.91/612,205.42 - Step 6: Final answer
x = 579,363.99
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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.