Finding the Fourth Proportional to 2,638,744,653.62, 3,639,794,271.84 and 1,621,024,728.50
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Solution
The fourth proportional to 2,638,744,653.62, 3,639,794,271.84 and 1,621,024,728.50 is: 2,235,986,158.50
Step by Step Solution
- Step 1: Write the proportion equation
2,638,744,653.62 : 3,639,794,271.84 = 1,621,024,728.50 : x - Step 2: Convert to fraction form
2,638,744,653.62/3,639,794,271.84 = 1,621,024,728.50/x - Step 3: Cross multiply
2,638,744,653.62x = 3,639,794,271.84 × 1,621,024,728.50 - Step 4: Simplify right side
2,638,744,653.62x = 5,900,196,521,305,291,776 - Step 5: Solve for x
x = 5,900,196,521,305,291,776/2,638,744,653.62 - Step 6: Final answer
x = 2,235,986,158.50
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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.