Finding the Fourth Proportional to 1,286,117.16, 1,774,713.78 and 742,428.11
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Solution
The fourth proportional to 1,286,117.16, 1,774,713.78 and 742,428.11 is: 1,024,476.96
Step by Step Solution
- Step 1: Write the proportion equation
1,286,117.16 : 1,774,713.78 = 742,428.11 : x - Step 2: Convert to fraction form
1,286,117.16/1,774,713.78 = 742,428.11/x - Step 3: Cross multiply
1,286,117.16x = 1,774,713.78 × 742,428.11 - Step 4: Simplify right side
1,286,117.16x = 1,317,597,401,913.14 - Step 5: Solve for x
x = 1,317,597,401,913.14/1,286,117.16 - Step 6: Final answer
x = 1,024,476.96
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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.