Finding the Fourth Proportional to 912,261.88, 1,259,121.20 and 530,508.88
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Solution
The fourth proportional to 912,261.88, 1,259,121.20 and 530,508.88 is: 732,218.45
Step by Step Solution
- Step 1: Write the proportion equation
912,261.88 : 1,259,121.20 = 530,508.88 : x - Step 2: Convert to fraction form
912,261.88/1,259,121.20 = 530,508.88/x - Step 3: Cross multiply
912,261.88x = 1,259,121.20 × 530,508.88 - Step 4: Simplify right side
912,261.88x = 667,974,977,596.26 - Step 5: Solve for x
x = 667,974,977,596.26/912,261.88 - Step 6: Final answer
x = 732,218.45
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1.5x scale
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.