Finding the Fourth Proportional to 430,403.20, 644,827.20 and 368,195.20
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Solution
The fourth proportional to 430,403.20, 644,827.20 and 368,195.20 is: 551,627.59
Step by Step Solution
- Step 1: Write the proportion equation
430,403.20 : 644,827.20 = 368,195.20 : x - Step 2: Convert to fraction form
430,403.20/644,827.20 = 368,195.20/x - Step 3: Cross multiply
430,403.20x = 644,827.20 × 368,195.20 - Step 4: Simplify right side
430,403.20x = 237,422,279,869.44 - Step 5: Solve for x
x = 237,422,279,869.44/430,403.20 - Step 6: Final answer
x = 551,627.59
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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.