Finding the Fourth Proportional to 2,155,624.44, 2,974,720.32 and 1,188,844.08
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Solution
The fourth proportional to 2,155,624.44, 2,974,720.32 and 1,188,844.08 is: 1,640,581.99
Step by Step Solution
- Step 1: Write the proportion equation
2,155,624.44 : 2,974,720.32 = 1,188,844.08 : x - Step 2: Convert to fraction form
2,155,624.44/2,974,720.32 = 1,188,844.08/x - Step 3: Cross multiply
2,155,624.44x = 2,974,720.32 × 1,188,844.08 - Step 4: Simplify right side
2,155,624.44x = 3,536,478,642,087.71 - Step 5: Solve for x
x = 3,536,478,642,087.71/2,155,624.44 - Step 6: Final answer
x = 1,640,581.99
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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.