Finding the Fourth Proportional to 6,986,572.10, 9,641,370.74 and 3,930,779.06
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Solution
The fourth proportional to 6,986,572.10, 9,641,370.74 and 3,930,779.06 is: 5,424,419.54
Step by Step Solution
- Step 1: Write the proportion equation
6,986,572.10 : 9,641,370.74 = 3,930,779.06 : x - Step 2: Convert to fraction form
6,986,572.10/9,641,370.74 = 3,930,779.06/x - Step 3: Cross multiply
6,986,572.10x = 9,641,370.74 × 3,930,779.06 - Step 4: Simplify right side
6,986,572.10x = 37,898,098,218,938.23 - Step 5: Solve for x
x = 37,898,098,218,938.23/6,986,572.10 - Step 6: Final answer
x = 5,424,419.54
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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.