Finding the Fourth Proportional to 612,427.80, 918,641.70 and 446,539.80
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Solution
The fourth proportional to 612,427.80, 918,641.70 and 446,539.80 is: 669,809.70
Step by Step Solution
- Step 1: Write the proportion equation
612,427.80 : 918,641.70 = 446,539.80 : x - Step 2: Convert to fraction form
612,427.80/918,641.70 = 446,539.80/x - Step 3: Cross multiply
612,427.80x = 918,641.70 × 446,539.80 - Step 4: Simplify right side
612,427.80x = 410,210,080,989.66 - Step 5: Solve for x
x = 410,210,080,989.66/612,427.80 - Step 6: Final answer
x = 669,809.70
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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.