Finding the Fourth Proportional to 7,183,406.42, 9,913,310.85 and 3,920,430.63
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Solution
The fourth proportional to 7,183,406.42, 9,913,310.85 and 3,920,430.63 is: 5,410,308.87
Step by Step Solution
- Step 1: Write the proportion equation
7,183,406.42 : 9,913,310.85 = 3,920,430.63 : x - Step 2: Convert to fraction form
7,183,406.42/9,913,310.85 = 3,920,430.63/x - Step 3: Cross multiply
7,183,406.42x = 9,913,310.85 × 3,920,430.63 - Step 4: Simplify right side
7,183,406.42x = 38,864,447,501,051.34 - Step 5: Solve for x
x = 38,864,447,501,051.34/7,183,406.42 - Step 6: Final answer
x = 5,410,308.87
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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.