Finding the Fourth Proportional to 839,434.54, 1,158,385.98 and 457,453.12
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Solution
The fourth proportional to 839,434.54, 1,158,385.98 and 457,453.12 is: 631,266.95
Step by Step Solution
- Step 1: Write the proportion equation
839,434.54 : 1,158,385.98 = 457,453.12 : x - Step 2: Convert to fraction form
839,434.54/1,158,385.98 = 457,453.12/x - Step 3: Cross multiply
839,434.54x = 1,158,385.98 × 457,453.12 - Step 4: Simplify right side
839,434.54x = 529,907,280,715.26 - Step 5: Solve for x
x = 529,907,280,715.26/839,434.54 - Step 6: Final answer
x = 631,266.95
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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.