Finding the Fourth Proportional to 5,282,815.60, 7,290,312.42 and 2,991,422.80
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Solution
The fourth proportional to 5,282,815.60, 7,290,312.42 and 2,991,422.80 is: 4,128,178.69
Step by Step Solution
- Step 1: Write the proportion equation
5,282,815.60 : 7,290,312.42 = 2,991,422.80 : x - Step 2: Convert to fraction form
5,282,815.60/7,290,312.42 = 2,991,422.80/x - Step 3: Cross multiply
5,282,815.60x = 7,290,312.42 × 2,991,422.80 - Step 4: Simplify right side
5,282,815.60x = 21,808,406,792,311.18 - Step 5: Solve for x
x = 21,808,406,792,311.18/5,282,815.60 - Step 6: Final answer
x = 4,128,178.69
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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.