Finding the Fourth Proportional to 2,155,203,607.20, 3,232,805,410.80 and 1,638,642,955.20
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Solution
The fourth proportional to 2,155,203,607.20, 3,232,805,410.80 and 1,638,642,955.20 is: 2,457,964,432.80
Step by Step Solution
- Step 1: Write the proportion equation
2,155,203,607.20 : 3,232,805,410.80 = 1,638,642,955.20 : x - Step 2: Convert to fraction form
2,155,203,607.20/3,232,805,410.80 = 1,638,642,955.20/x - Step 3: Cross multiply
2,155,203,607.20x = 3,232,805,410.80 × 1,638,642,955.20 - Step 4: Simplify right side
2,155,203,607.20x = 5,297,413,811,939,862,528 - Step 5: Solve for x
x = 5,297,413,811,939,862,528/2,155,203,607.20 - Step 6: Final answer
x = 2,457,964,432.80
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1.5x scale
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.