Finding the Fourth Proportional to 1,317,928,316.28, 1,818,768,861.68 and 723,207,598.48
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Solution
The fourth proportional to 1,317,928,316.28, 1,818,768,861.68 and 723,207,598.48 is: 998,041,732.92
Step by Step Solution
- Step 1: Write the proportion equation
1,317,928,316.28 : 1,818,768,861.68 = 723,207,598.48 : x - Step 2: Convert to fraction form
1,317,928,316.28/1,818,768,861.68 = 723,207,598.48/x - Step 3: Cross multiply
1,317,928,316.28x = 1,818,768,861.68 × 723,207,598.48 - Step 4: Simplify right side
1,317,928,316.28x = 1,315,347,460,645,796,096 - Step 5: Solve for x
x = 1,315,347,460,645,796,096/1,317,928,316.28 - Step 6: Final answer
x = 998,041,732.92
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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.