Finding the Fourth Proportional to 7,890,220.80, 11,835,331.20 and 2,840,875.20
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Solution
The fourth proportional to 7,890,220.80, 11,835,331.20 and 2,840,875.20 is: 4,261,312.80
Step by Step Solution
- Step 1: Write the proportion equation
7,890,220.80 : 11,835,331.20 = 2,840,875.20 : x - Step 2: Convert to fraction form
7,890,220.80/11,835,331.20 = 2,840,875.20/x - Step 3: Cross multiply
7,890,220.80x = 11,835,331.20 × 2,840,875.20 - Step 4: Simplify right side
7,890,220.80x = 33,622,698,889,866.24 - Step 5: Solve for x
x = 33,622,698,889,866.24/7,890,220.80 - Step 6: Final answer
x = 4,261,312.80
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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.