Finding the Fourth Proportional to 742,138.47, 1,112,515.16 and 292,863.06
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Solution
The fourth proportional to 742,138.47, 1,112,515.16 and 292,863.06 is: 439,021.30
Step by Step Solution
- Step 1: Write the proportion equation
742,138.47 : 1,112,515.16 = 292,863.06 : x - Step 2: Convert to fraction form
742,138.47/1,112,515.16 = 292,863.06/x - Step 3: Cross multiply
742,138.47x = 1,112,515.16 × 292,863.06 - Step 4: Simplify right side
742,138.47x = 325,814,592,589.67 - Step 5: Solve for x
x = 325,814,592,589.67/742,138.47 - Step 6: Final answer
x = 439,021.30
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.