Finding the Fourth Proportional to 918,129.10, 1,286,430.50 and 918,129.10
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Solution
The fourth proportional to 918,129.10, 1,286,430.50 and 918,129.10 is: 1,286,430.50
Step by Step Solution
- Step 1: Write the proportion equation
918,129.10 : 1,286,430.50 = 918,129.10 : x - Step 2: Convert to fraction form
918,129.10/1,286,430.50 = 918,129.10/x - Step 3: Cross multiply
918,129.10x = 1,286,430.50 × 918,129.10 - Step 4: Simplify right side
918,129.10x = 1,181,109,277,177.55 - Step 5: Solve for x
x = 1,181,109,277,177.55/918,129.10 - Step 6: Final answer
x = 1,286,430.50
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.