Finding the Fourth Proportional to 879,545.12, 1,213,774.60 and 477,137.12
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Solution
The fourth proportional to 879,545.12, 1,213,774.60 and 477,137.12 is: 658,450.49
Step by Step Solution
- Step 1: Write the proportion equation
879,545.12 : 1,213,774.60 = 477,137.12 : x - Step 2: Convert to fraction form
879,545.12/1,213,774.60 = 477,137.12/x - Step 3: Cross multiply
879,545.12x = 1,213,774.60 × 477,137.12 - Step 4: Simplify right side
879,545.12x = 579,136,916,973.15 - Step 5: Solve for x
x = 579,136,916,973.15/879,545.12 - Step 6: Final answer
x = 658,450.49
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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.