Finding the Fourth Proportional to 612,990.19, 845,913.22 and 354,878.08
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Solution
The fourth proportional to 612,990.19, 845,913.22 and 354,878.08 is: 489,724.08
Step by Step Solution
- Step 1: Write the proportion equation
612,990.19 : 845,913.22 = 354,878.08 : x - Step 2: Convert to fraction form
612,990.19/845,913.22 = 354,878.08/x - Step 3: Cross multiply
612,990.19x = 845,913.22 × 354,878.08 - Step 4: Simplify right side
612,990.19x = 300,196,056,358.24 - Step 5: Solve for x
x = 300,196,056,358.24/612,990.19 - Step 6: Final answer
x = 489,724.08
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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.