Finding the Fourth Proportional to 1,388,079.90, 1,915,537.14 and 776,225.66
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Solution
The fourth proportional to 1,388,079.90, 1,915,537.14 and 776,225.66 is: 1,071,184.07
Step by Step Solution
- Step 1: Write the proportion equation
1,388,079.90 : 1,915,537.14 = 776,225.66 : x - Step 2: Convert to fraction form
1,388,079.90/1,915,537.14 = 776,225.66/x - Step 3: Cross multiply
1,388,079.90x = 1,915,537.14 × 776,225.66 - Step 4: Simplify right side
1,388,079.90x = 1,486,889,071,173.33 - Step 5: Solve for x
x = 1,486,889,071,173.33/1,388,079.90 - Step 6: Final answer
x = 1,071,184.07
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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.