Finding the Fourth Proportional to 2,129,553.16, 2,938,847.64 and 1,211,913.94
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Solution
The fourth proportional to 2,129,553.16, 2,938,847.64 and 1,211,913.94 is: 1,672,477.82
Step by Step Solution
- Step 1: Write the proportion equation
2,129,553.16 : 2,938,847.64 = 1,211,913.94 : x - Step 2: Convert to fraction form
2,129,553.16/2,938,847.64 = 1,211,913.94/x - Step 3: Cross multiply
2,129,553.16x = 2,938,847.64 × 1,211,913.94 - Step 4: Simplify right side
2,129,553.16x = 3,561,630,422,452.10 - Step 5: Solve for x
x = 3,561,630,422,452.10/2,129,553.16 - Step 6: Final answer
x = 1,672,477.82
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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.