Finding the Fourth Proportional to 1,361,909.89, 1,879,374.99 and 780,716.36
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Solution
The fourth proportional to 1,361,909.89, 1,879,374.99 and 780,716.36 is: 1,077,353.81
Step by Step Solution
- Step 1: Write the proportion equation
1,361,909.89 : 1,879,374.99 = 780,716.36 : x - Step 2: Convert to fraction form
1,361,909.89/1,879,374.99 = 780,716.36/x - Step 3: Cross multiply
1,361,909.89x = 1,879,374.99 × 780,716.36 - Step 4: Simplify right side
1,361,909.89x = 1,467,258,803,219.63 - Step 5: Solve for x
x = 1,467,258,803,219.63/1,361,909.89 - Step 6: Final answer
x = 1,077,353.81
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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.