Finding the Fourth Proportional to 1,428,931.34, 1,971,028.28 and 847,742.99
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Solution
The fourth proportional to 1,428,931.34, 1,971,028.28 and 847,742.99 is: 1,169,353.19
Step by Step Solution
- Step 1: Write the proportion equation
1,428,931.34 : 1,971,028.28 = 847,742.99 : x - Step 2: Convert to fraction form
1,428,931.34/1,971,028.28 = 847,742.99/x - Step 3: Cross multiply
1,428,931.34x = 1,971,028.28 × 847,742.99 - Step 4: Simplify right side
1,428,931.34x = 1,670,925,414,508.69 - Step 5: Solve for x
x = 1,670,925,414,508.69/1,428,931.34 - Step 6: Final answer
x = 1,169,353.19
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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.