Finding the Fourth Proportional to 745,437.80, 1,028,676.06 and 455,534.12
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Solution
The fourth proportional to 745,437.80, 1,028,676.06 and 455,534.12 is: 628,619.91
Step by Step Solution
- Step 1: Write the proportion equation
745,437.80 : 1,028,676.06 = 455,534.12 : x - Step 2: Convert to fraction form
745,437.80/1,028,676.06 = 455,534.12/x - Step 3: Cross multiply
745,437.80x = 1,028,676.06 × 455,534.12 - Step 4: Simplify right side
745,437.80x = 468,597,043,757.17 - Step 5: Solve for x
x = 468,597,043,757.17/745,437.80 - Step 6: Final answer
x = 628,619.91
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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.