Finding the Fourth Proportional to 655,873,621.62, 905,105,639.61 and 358,517,040.36
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Solution
The fourth proportional to 655,873,621.62, 905,105,639.61 and 358,517,040.36 is: 494,753,538.53
Step by Step Solution
- Step 1: Write the proportion equation
655,873,621.62 : 905,105,639.61 = 358,517,040.36 : x - Step 2: Convert to fraction form
655,873,621.62/905,105,639.61 = 358,517,040.36/x - Step 3: Cross multiply
655,873,621.62x = 905,105,639.61 × 358,517,040.36 - Step 4: Simplify right side
655,873,621.62x = 324,495,795,126,121,984 - Step 5: Solve for x
x = 324,495,795,126,121,984/655,873,621.62 - Step 6: Final answer
x = 494,753,538.53
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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.