Finding the Fourth Proportional to 1,286,885.13, 1,930,342.56 and 388,334.66
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Solution
The fourth proportional to 1,286,885.13, 1,930,342.56 and 388,334.66 is: 582,506.47
Step by Step Solution
- Step 1: Write the proportion equation
1,286,885.13 : 1,930,342.56 = 388,334.66 : x - Step 2: Convert to fraction form
1,286,885.13/1,930,342.56 = 388,334.66/x - Step 3: Cross multiply
1,286,885.13x = 1,930,342.56 × 388,334.66 - Step 4: Simplify right side
1,286,885.13x = 749,618,913,889.74 - Step 5: Solve for x
x = 749,618,913,889.74/1,286,885.13 - Step 6: Final answer
x = 582,506.47
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.