Finding the Fourth Proportional to 762,153.10, 1,051,695.49 and 439,966.99
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Solution
The fourth proportional to 762,153.10, 1,051,695.49 and 439,966.99 is: 607,110.70
Step by Step Solution
- Step 1: Write the proportion equation
762,153.10 : 1,051,695.49 = 439,966.99 : x - Step 2: Convert to fraction form
762,153.10/1,051,695.49 = 439,966.99/x - Step 3: Cross multiply
762,153.10x = 1,051,695.49 × 439,966.99 - Step 4: Simplify right side
762,153.10x = 462,711,299,131.88 - Step 5: Solve for x
x = 462,711,299,131.88/762,153.10 - Step 6: Final answer
x = 607,110.70
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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.