Finding the Fourth Proportional to 5,307,415.20, 7,961,122.80 and 1,318,327.20
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Solution
The fourth proportional to 5,307,415.20, 7,961,122.80 and 1,318,327.20 is: 1,977,490.80
Step by Step Solution
- Step 1: Write the proportion equation
5,307,415.20 : 7,961,122.80 = 1,318,327.20 : x - Step 2: Convert to fraction form
5,307,415.20/7,961,122.80 = 1,318,327.20/x - Step 3: Cross multiply
5,307,415.20x = 7,961,122.80 × 1,318,327.20 - Step 4: Simplify right side
5,307,415.20x = 10,495,364,729,780.16 - Step 5: Solve for x
x = 10,495,364,729,780.16/5,307,415.20 - Step 6: Final answer
x = 1,977,490.80
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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.