Finding the Fourth Proportional to 670,221.68, 1,005,405.80 and 290,881.68
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Solution
The fourth proportional to 670,221.68, 1,005,405.80 and 290,881.68 is: 436,354.32
Step by Step Solution
- Step 1: Write the proportion equation
670,221.68 : 1,005,405.80 = 290,881.68 : x - Step 2: Convert to fraction form
670,221.68/1,005,405.80 = 290,881.68/x - Step 3: Cross multiply
670,221.68x = 1,005,405.80 × 290,881.68 - Step 4: Simplify right side
670,221.68x = 292,454,128,185.74 - Step 5: Solve for x
x = 292,454,128,185.74/670,221.68 - Step 6: Final answer
x = 436,354.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.