Finding the Fourth Proportional to 7,086,396.25, 9,779,228.85 and 4,146,778.36
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Solution
The fourth proportional to 7,086,396.25, 9,779,228.85 and 4,146,778.36 is: 5,722,555.32
Step by Step Solution
- Step 1: Write the proportion equation
7,086,396.25 : 9,779,228.85 = 4,146,778.36 : x - Step 2: Convert to fraction form
7,086,396.25/9,779,228.85 = 4,146,778.36/x - Step 3: Cross multiply
7,086,396.25x = 9,779,228.85 × 4,146,778.36 - Step 4: Simplify right side
7,086,396.25x = 40,552,294,572,667.68 - Step 5: Solve for x
x = 40,552,294,572,667.68/7,086,396.25 - Step 6: Final answer
x = 5,722,555.32
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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.