Finding the Fourth Proportional to 1,318,313.55, 1,819,321.70 and 745,319.55
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Solution
The fourth proportional to 1,318,313.55, 1,819,321.70 and 745,319.55 is: 1,028,568.68
Step by Step Solution
- Step 1: Write the proportion equation
1,318,313.55 : 1,819,321.70 = 745,319.55 : x - Step 2: Convert to fraction form
1,318,313.55/1,819,321.70 = 745,319.55/x - Step 3: Cross multiply
1,318,313.55x = 1,819,321.70 × 745,319.55 - Step 4: Simplify right side
1,318,313.55x = 1,355,976,030,749.24 - Step 5: Solve for x
x = 1,355,976,030,749.24/1,318,313.55 - Step 6: Final answer
x = 1,028,568.68
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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.