Finding the Fourth Proportional to 487,643.70, 731,465.55 and 408,911.70
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Solution
The fourth proportional to 487,643.70, 731,465.55 and 408,911.70 is: 613,367.55
Step by Step Solution
- Step 1: Write the proportion equation
487,643.70 : 731,465.55 = 408,911.70 : x - Step 2: Convert to fraction form
487,643.70/731,465.55 = 408,911.70/x - Step 3: Cross multiply
487,643.70x = 731,465.55 × 408,911.70 - Step 4: Simplify right side
487,643.70x = 299,104,821,541.94 - Step 5: Solve for x
x = 299,104,821,541.94/487,643.70 - Step 6: Final answer
x = 613,367.55
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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.