Finding the Fourth Proportional to 817,775.80, 1,128,530.46 and 455,191.84
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Solution
The fourth proportional to 817,775.80, 1,128,530.46 and 455,191.84 is: 628,164.66
Step by Step Solution
- Step 1: Write the proportion equation
817,775.80 : 1,128,530.46 = 455,191.84 : x - Step 2: Convert to fraction form
817,775.80/1,128,530.46 = 455,191.84/x - Step 3: Cross multiply
817,775.80x = 1,128,530.46 × 455,191.84 - Step 4: Simplify right side
817,775.80x = 513,697,856,583.45 - Step 5: Solve for x
x = 513,697,856,583.45/817,775.80 - Step 6: Final answer
x = 628,164.66
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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.