Finding the Fourth Proportional to 2,138,395.48, 2,950,984.74 and 1,278,955.72
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Solution
The fourth proportional to 2,138,395.48, 2,950,984.74 and 1,278,955.72 is: 1,764,958.28
Step by Step Solution
- Step 1: Write the proportion equation
2,138,395.48 : 2,950,984.74 = 1,278,955.72 : x - Step 2: Convert to fraction form
2,138,395.48/2,950,984.74 = 1,278,955.72/x - Step 3: Cross multiply
2,138,395.48x = 2,950,984.74 × 1,278,955.72 - Step 4: Simplify right side
2,138,395.48x = 3,774,178,812,855.71 - Step 5: Solve for x
x = 3,774,178,812,855.71/2,138,395.48 - Step 6: Final answer
x = 1,764,958.28
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1.5x scale
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.