Finding the Fourth Proportional to 2,438,412.12, 3,365,062.92 and 1,391,812.20
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Solution
The fourth proportional to 2,438,412.12, 3,365,062.92 and 1,391,812.20 is: 1,920,731.77
Step by Step Solution
- Step 1: Write the proportion equation
2,438,412.12 : 3,365,062.92 = 1,391,812.20 : x - Step 2: Convert to fraction form
2,438,412.12/3,365,062.92 = 1,391,812.20/x - Step 3: Cross multiply
2,438,412.12x = 3,365,062.92 × 1,391,812.20 - Step 4: Simplify right side
2,438,412.12x = 4,683,535,625,823.62 - Step 5: Solve for x
x = 4,683,535,625,823.62/2,438,412.12 - Step 6: Final answer
x = 1,920,731.77
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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.