Finding the Fourth Proportional to 1,388,585.34, 1,915,409.86 and 917,095.99
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Solution
The fourth proportional to 1,388,585.34, 1,915,409.86 and 917,095.99 is: 1,265,039.07
Step by Step Solution
- Step 1: Write the proportion equation
1,388,585.34 : 1,915,409.86 = 917,095.99 : x - Step 2: Convert to fraction form
1,388,585.34/1,915,409.86 = 917,095.99/x - Step 3: Cross multiply
1,388,585.34x = 1,915,409.86 × 917,095.99 - Step 4: Simplify right side
1,388,585.34x = 1,756,614,701,122.16 - Step 5: Solve for x
x = 1,756,614,701,122.16/1,388,585.34 - Step 6: Final answer
x = 1,265,039.07
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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.