Finding the Fourth Proportional to 438,113.70, 655,712.55 and 317,828.70
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Solution
The fourth proportional to 438,113.70, 655,712.55 and 317,828.70 is: 475,685.35
Step by Step Solution
- Step 1: Write the proportion equation
438,113.70 : 655,712.55 = 317,828.70 : x - Step 2: Convert to fraction form
438,113.70/655,712.55 = 317,828.70/x - Step 3: Cross multiply
438,113.70x = 655,712.55 × 317,828.70 - Step 4: Simplify right side
438,113.70x = 208,404,267,340.19 - Step 5: Solve for x
x = 208,404,267,340.19/438,113.70 - Step 6: Final answer
x = 475,685.35
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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.