Finding the Fourth Proportional to 1,390,272.99, 2,085,634.50 and 430,503.03
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Solution
The fourth proportional to 1,390,272.99, 2,085,634.50 and 430,503.03 is: 645,824.22
Step by Step Solution
- Step 1: Write the proportion equation
1,390,272.99 : 2,085,634.50 = 430,503.03 : x - Step 2: Convert to fraction form
1,390,272.99/2,085,634.50 = 430,503.03/x - Step 3: Cross multiply
1,390,272.99x = 2,085,634.50 × 430,503.03 - Step 4: Simplify right side
1,390,272.99x = 897,871,971,722.54 - Step 5: Solve for x
x = 897,871,971,722.54/1,390,272.99 - Step 6: Final answer
x = 645,824.22
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.