Finding the Fourth Proportional to 1,434,135.60, 1,979,031.99 and 789,429.87
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Solution
The fourth proportional to 1,434,135.60, 1,979,031.99 and 789,429.87 is: 1,089,371.86
Step by Step Solution
- Step 1: Write the proportion equation
1,434,135.60 : 1,979,031.99 = 789,429.87 : x - Step 2: Convert to fraction form
1,434,135.60/1,979,031.99 = 789,429.87/x - Step 3: Cross multiply
1,434,135.60x = 1,979,031.99 × 789,429.87 - Step 4: Simplify right side
1,434,135.60x = 1,562,306,962,130.53 - Step 5: Solve for x
x = 1,562,306,962,130.53/1,434,135.60 - Step 6: Final answer
x = 1,089,371.86
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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.