Finding the Fourth Proportional to 712,281.70, 982,911.00 and 389,929.75
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Solution
The fourth proportional to 712,281.70, 982,911.00 and 389,929.75 is: 538,082.39
Step by Step Solution
- Step 1: Write the proportion equation
712,281.70 : 982,911.00 = 389,929.75 : x - Step 2: Convert to fraction form
712,281.70/982,911.00 = 389,929.75/x - Step 3: Cross multiply
712,281.70x = 982,911.00 × 389,929.75 - Step 4: Simplify right side
712,281.70x = 383,266,239,507.21 - Step 5: Solve for x
x = 383,266,239,507.21/712,281.70 - Step 6: Final answer
x = 538,082.39
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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.