Finding the Fourth Proportional to 478,435.20, 717,652.80 and 399,703.20
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Solution
The fourth proportional to 478,435.20, 717,652.80 and 399,703.20 is: 599,554.80
Step by Step Solution
- Step 1: Write the proportion equation
478,435.20 : 717,652.80 = 399,703.20 : x - Step 2: Convert to fraction form
478,435.20/717,652.80 = 399,703.20/x - Step 3: Cross multiply
478,435.20x = 717,652.80 × 399,703.20 - Step 4: Simplify right side
478,435.20x = 286,848,120,648.96 - Step 5: Solve for x
x = 286,848,120,648.96/478,435.20 - Step 6: Final answer
x = 599,554.80
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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.