Finding the Fourth Proportional to 778,612.20, 1,168,246.35 and 423,880.80
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Solution
The fourth proportional to 778,612.20, 1,168,246.35 and 423,880.80 is: 635,999.79
Step by Step Solution
- Step 1: Write the proportion equation
778,612.20 : 1,168,246.35 = 423,880.80 : x - Step 2: Convert to fraction form
778,612.20/1,168,246.35 = 423,880.80/x - Step 3: Cross multiply
778,612.20x = 1,168,246.35 × 423,880.80 - Step 4: Simplify right side
778,612.20x = 495,197,197,435.08 - Step 5: Solve for x
x = 495,197,197,435.08/778,612.20 - Step 6: Final answer
x = 635,999.79
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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.