Finding the Fourth Proportional to 1,314,147.32, 1,971,415.08 and 415,385.09
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Solution
The fourth proportional to 1,314,147.32, 1,971,415.08 and 415,385.09 is: 623,138.99
Step by Step Solution
- Step 1: Write the proportion equation
1,314,147.32 : 1,971,415.08 = 415,385.09 : x - Step 2: Convert to fraction form
1,314,147.32/1,971,415.08 = 415,385.09/x - Step 3: Cross multiply
1,314,147.32x = 1,971,415.08 × 415,385.09 - Step 4: Simplify right side
1,314,147.32x = 818,896,430,433.16 - Step 5: Solve for x
x = 818,896,430,433.16/1,314,147.32 - Step 6: Final answer
x = 623,138.99
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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.