Finding the Fourth Proportional to 438,675.40, 657,439.80 and 317,503.93
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Solution
The fourth proportional to 438,675.40, 657,439.80 and 317,503.93 is: 475,840.95
Step by Step Solution
- Step 1: Write the proportion equation
438,675.40 : 657,439.80 = 317,503.93 : x - Step 2: Convert to fraction form
438,675.40/657,439.80 = 317,503.93/x - Step 3: Cross multiply
438,675.40x = 657,439.80 × 317,503.93 - Step 4: Simplify right side
438,675.40x = 208,739,720,238.41 - Step 5: Solve for x
x = 208,739,720,238.41/438,675.40 - Step 6: Final answer
x = 475,840.95
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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.