Finding the Fourth Proportional to 963,419.21, 1,329,660.12 and 555,441.31
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Solution
The fourth proportional to 963,419.21, 1,329,660.12 and 555,441.31 is: 766,590.65
Step by Step Solution
- Step 1: Write the proportion equation
963,419.21 : 1,329,660.12 = 555,441.31 : x - Step 2: Convert to fraction form
963,419.21/1,329,660.12 = 555,441.31/x - Step 3: Cross multiply
963,419.21x = 1,329,660.12 × 555,441.31 - Step 4: Simplify right side
963,419.21x = 738,548,162,179.13 - Step 5: Solve for x
x = 738,548,162,179.13/963,419.21 - Step 6: Final answer
x = 766,590.65
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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.