Finding the Fourth Proportional to 1,122,162.81, 1,548,594.58 and 638,759.09
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Solution
The fourth proportional to 1,122,162.81, 1,548,594.58 and 638,759.09 is: 881,493.18
Step by Step Solution
- Step 1: Write the proportion equation
1,122,162.81 : 1,548,594.58 = 638,759.09 : x - Step 2: Convert to fraction form
1,122,162.81/1,548,594.58 = 638,759.09/x - Step 3: Cross multiply
1,122,162.81x = 1,548,594.58 × 638,759.09 - Step 4: Simplify right side
1,122,162.81x = 989,178,864,699.73 - Step 5: Solve for x
x = 989,178,864,699.73/1,122,162.81 - Step 6: Final answer
x = 881,493.18
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1.5x scale
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.