Finding the Fourth Proportional to 3,178,289.94, 4,386,167.48 and 1,727,980.90
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Solution
The fourth proportional to 3,178,289.94, 4,386,167.48 and 1,727,980.90 is: 2,384,682.89
Step by Step Solution
- Step 1: Write the proportion equation
3,178,289.94 : 4,386,167.48 = 1,727,980.90 : x - Step 2: Convert to fraction form
3,178,289.94/4,386,167.48 = 1,727,980.90/x - Step 3: Cross multiply
3,178,289.94x = 4,386,167.48 × 1,727,980.90 - Step 4: Simplify right side
3,178,289.94x = 7,579,213,629,641.13 - Step 5: Solve for x
x = 7,579,213,629,641.13/3,178,289.94 - Step 6: Final answer
x = 2,384,682.89
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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.