Finding the Fourth Proportional to 1,331,993.71, 1,838,113.99 and 728,368.75
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Solution
The fourth proportional to 1,331,993.71, 1,838,113.99 and 728,368.75 is: 1,005,128.46
Step by Step Solution
- Step 1: Write the proportion equation
1,331,993.71 : 1,838,113.99 = 728,368.75 : x - Step 2: Convert to fraction form
1,331,993.71/1,838,113.99 = 728,368.75/x - Step 3: Cross multiply
1,331,993.71x = 1,838,113.99 × 728,368.75 - Step 4: Simplify right side
1,331,993.71x = 1,338,824,789,253.81 - Step 5: Solve for x
x = 1,338,824,789,253.81/1,331,993.71 - Step 6: Final answer
x = 1,005,128.46
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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.