Finding the Fourth Proportional to 438,819.76, 605,615.97 and 316,412.83
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Solution
The fourth proportional to 438,819.76, 605,615.97 and 316,412.83 is: 436,681.94
Step by Step Solution
- Step 1: Write the proportion equation
438,819.76 : 605,615.97 = 316,412.83 : x - Step 2: Convert to fraction form
438,819.76/605,615.97 = 316,412.83/x - Step 3: Cross multiply
438,819.76x = 605,615.97 × 316,412.83 - Step 4: Simplify right side
438,819.76x = 191,624,662,960.90 - Step 5: Solve for x
x = 191,624,662,960.90/438,819.76 - Step 6: Final answer
x = 436,681.94
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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.