Finding the Fourth Proportional to 1,138,700, 1,571,408.56 and 686,010.08
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Solution
The fourth proportional to 1,138,700, 1,571,408.56 and 686,010.08 is: 946,695.45
Step by Step Solution
- Step 1: Write the proportion equation
1,138,700 : 1,571,408.56 = 686,010.08 : x - Step 2: Convert to fraction form
1,138,700/1,571,408.56 = 686,010.08/x - Step 3: Cross multiply
1,138,700x = 1,571,408.56 × 686,010.08 - Step 4: Simplify right side
1,138,700x = 1,078,002,111,958.28 - Step 5: Solve for x
x = 1,078,002,111,958.28/1,138,700 - Step 6: Final answer
x = 946,695.45
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1.5x scale
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.