Finding the Fourth Proportional to 538,369.64, 742,820.12 and 354,588.74
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Solution
The fourth proportional to 538,369.64, 742,820.12 and 354,588.74 is: 489,246.85
Step by Step Solution
- Step 1: Write the proportion equation
538,369.64 : 742,820.12 = 354,588.74 : x - Step 2: Convert to fraction form
538,369.64/742,820.12 = 354,588.74/x - Step 3: Cross multiply
538,369.64x = 742,820.12 × 354,588.74 - Step 4: Simplify right side
538,369.64x = 263,395,649,025.69 - Step 5: Solve for x
x = 263,395,649,025.69/538,369.64 - Step 6: Final answer
x = 489,246.85
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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.