Finding the Fourth Proportional to 492,291.60, 679,371.12 and 288,489.12
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Solution
The fourth proportional to 492,291.60, 679,371.12 and 288,489.12 is: 398,120.09
Step by Step Solution
- Step 1: Write the proportion equation
492,291.60 : 679,371.12 = 288,489.12 : x - Step 2: Convert to fraction form
492,291.60/679,371.12 = 288,489.12/x - Step 3: Cross multiply
492,291.60x = 679,371.12 × 288,489.12 - Step 4: Simplify right side
492,291.60x = 195,991,176,562.21 - Step 5: Solve for x
x = 195,991,176,562.21/492,291.60 - Step 6: Final answer
x = 398,120.09
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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.