Finding the Fourth Proportional to 491,494,219.40, 678,264,334.51 and 268,478,995.02
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Solution
The fourth proportional to 491,494,219.40, 678,264,334.51 and 268,478,995.02 is: 370,502,275.92
Step by Step Solution
- Step 1: Write the proportion equation
491,494,219.40 : 678,264,334.51 = 268,478,995.02 : x - Step 2: Convert to fraction form
491,494,219.40/678,264,334.51 = 268,478,995.02/x - Step 3: Cross multiply
491,494,219.40x = 678,264,334.51 × 268,478,995.02 - Step 4: Simplify right side
491,494,219.40x = 182,099,726,886,482,720 - Step 5: Solve for x
x = 182,099,726,886,482,720/491,494,219.40 - Step 6: Final answer
x = 370,502,275.92
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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.