Finding the Fourth Proportional to 438,461.80, 657,692.70 and 391,805.80
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Solution
The fourth proportional to 438,461.80, 657,692.70 and 391,805.80 is: 587,708.70
Step by Step Solution
- Step 1: Write the proportion equation
438,461.80 : 657,692.70 = 391,805.80 : x - Step 2: Convert to fraction form
438,461.80/657,692.70 = 391,805.80/x - Step 3: Cross multiply
438,461.80x = 657,692.70 × 391,805.80 - Step 4: Simplify right side
438,461.80x = 257,687,814,477.66 - Step 5: Solve for x
x = 257,687,814,477.66/438,461.80 - Step 6: Final answer
x = 587,708.70
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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.