Finding the Fourth Proportional to 865,399.36, 1,297,476.80 and 391,840.96
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Solution
The fourth proportional to 865,399.36, 1,297,476.80 and 391,840.96 is: 587,479.70
Step by Step Solution
- Step 1: Write the proportion equation
865,399.36 : 1,297,476.80 = 391,840.96 : x - Step 2: Convert to fraction form
865,399.36/1,297,476.80 = 391,840.96/x - Step 3: Cross multiply
865,399.36x = 1,297,476.80 × 391,840.96 - Step 4: Simplify right side
865,399.36x = 508,404,554,889.73 - Step 5: Solve for x
x = 508,404,554,889.73/865,399.36 - Step 6: Final answer
x = 587,479.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.