Finding the Fourth Proportional to 644,636.24, 888,880.86 and 440,720.36
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Solution
The fourth proportional to 644,636.24, 888,880.86 and 440,720.36 is: 607,703.80
Step by Step Solution
- Step 1: Write the proportion equation
644,636.24 : 888,880.86 = 440,720.36 : x - Step 2: Convert to fraction form
644,636.24/888,880.86 = 440,720.36/x - Step 3: Cross multiply
644,636.24x = 888,880.86 × 440,720.36 - Step 4: Simplify right side
644,636.24x = 391,747,892,616.31 - Step 5: Solve for x
x = 391,747,892,616.31/644,636.24 - Step 6: Final answer
x = 607,703.80
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1.5x scale
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.