Finding the Fourth Proportional to 612,994.20, 845,918.74 and 354,882.08
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Solution
The fourth proportional to 612,994.20, 845,918.74 and 354,882.08 is: 489,729.60
Step by Step Solution
- Step 1: Write the proportion equation
612,994.20 : 845,918.74 = 354,882.08 : x - Step 2: Convert to fraction form
612,994.20/845,918.74 = 354,882.08/x - Step 3: Cross multiply
612,994.20x = 845,918.74 × 354,882.08 - Step 4: Simplify right side
612,994.20x = 300,201,401,962.18 - Step 5: Solve for x
x = 300,201,401,962.18/612,994.20 - Step 6: Final answer
x = 489,729.60
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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.