Finding the Fourth Proportional to 745,434.80, 1,028,671.94 and 455,531.12
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Solution
The fourth proportional to 745,434.80, 1,028,671.94 and 455,531.12 is: 628,615.78
Step by Step Solution
- Step 1: Write the proportion equation
745,434.80 : 1,028,671.94 = 455,531.12 : x - Step 2: Convert to fraction form
745,434.80/1,028,671.94 = 455,531.12/x - Step 3: Cross multiply
745,434.80x = 1,028,671.94 × 455,531.12 - Step 4: Simplify right side
745,434.80x = 468,592,080,940.77 - Step 5: Solve for x
x = 468,592,080,940.77/745,434.80 - Step 6: Final answer
x = 628,615.78
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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.