Finding the Fourth Proportional to 720,465,546.66, 994,243,304.34 and 390,440,685.66
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Solution
The fourth proportional to 720,465,546.66, 994,243,304.34 and 390,440,685.66 is: 538,808,606.82
Step by Step Solution
- Step 1: Write the proportion equation
720,465,546.66 : 994,243,304.34 = 390,440,685.66 : x - Step 2: Convert to fraction form
720,465,546.66/994,243,304.34 = 390,440,685.66/x - Step 3: Cross multiply
720,465,546.66x = 994,243,304.34 × 390,440,685.66 - Step 4: Simplify right side
720,465,546.66x = 388,193,037,459,373,696 - Step 5: Solve for x
x = 388,193,037,459,373,696/720,465,546.66 - Step 6: Final answer
x = 538,808,606.82
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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.