Finding the Fourth Proportional to 670,218.68, 1,005,401.30 and 290,878.68
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Solution
The fourth proportional to 670,218.68, 1,005,401.30 and 290,878.68 is: 436,349.82
Step by Step Solution
- Step 1: Write the proportion equation
670,218.68 : 1,005,401.30 = 290,878.68 : x - Step 2: Convert to fraction form
670,218.68/1,005,401.30 = 290,878.68/x - Step 3: Cross multiply
670,218.68x = 1,005,401.30 × 290,878.68 - Step 4: Simplify right side
670,218.68x = 292,449,803,014.28 - Step 5: Solve for x
x = 292,449,803,014.28/670,218.68 - Step 6: Final answer
x = 436,349.82
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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.