Finding the Fourth Proportional to 620,355.80, 930,533.70 and 305,427.80
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Solution
The fourth proportional to 620,355.80, 930,533.70 and 305,427.80 is: 458,141.70
Step by Step Solution
- Step 1: Write the proportion equation
620,355.80 : 930,533.70 = 305,427.80 : x - Step 2: Convert to fraction form
620,355.80/930,533.70 = 305,427.80/x - Step 3: Cross multiply
620,355.80x = 930,533.70 × 305,427.80 - Step 4: Simplify right side
620,355.80x = 284,210,860,816.86 - Step 5: Solve for x
x = 284,210,860,816.86/620,355.80 - Step 6: Final answer
x = 458,141.70
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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.