Finding the Fourth Proportional to 612,425.36, 918,824.78 and 313,116.12
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Solution
The fourth proportional to 612,425.36, 918,824.78 and 313,116.12 is: 469,769.65
Step by Step Solution
- Step 1: Write the proportion equation
612,425.36 : 918,824.78 = 313,116.12 : x - Step 2: Convert to fraction form
612,425.36/918,824.78 = 313,116.12/x - Step 3: Cross multiply
612,425.36x = 918,824.78 × 313,116.12 - Step 4: Simplify right side
612,425.36x = 287,698,850,856.24 - Step 5: Solve for x
x = 287,698,850,856.24/612,425.36 - Step 6: Final answer
x = 469,769.65
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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.