Finding the Fourth Proportional to 1,395,916.16, 1,925,873.69 and 912,764.12
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Solution
The fourth proportional to 1,395,916.16, 1,925,873.69 and 912,764.12 is: 1,259,293.68
Step by Step Solution
- Step 1: Write the proportion equation
1,395,916.16 : 1,925,873.69 = 912,764.12 : x - Step 2: Convert to fraction form
1,395,916.16/1,925,873.69 = 912,764.12/x - Step 3: Cross multiply
1,395,916.16x = 1,925,873.69 × 912,764.12 - Step 4: Simplify right side
1,395,916.16x = 1,757,868,389,690.81 - Step 5: Solve for x
x = 1,757,868,389,690.81/1,395,916.16 - Step 6: Final answer
x = 1,259,293.68
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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.