Finding the Fourth Proportional to 12,292,356.30, 18,438,534.45 and 4,615,986.30
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Solution
The fourth proportional to 12,292,356.30, 18,438,534.45 and 4,615,986.30 is: 6,923,979.45
Step by Step Solution
- Step 1: Write the proportion equation
12,292,356.30 : 18,438,534.45 = 4,615,986.30 : x - Step 2: Convert to fraction form
12,292,356.30/18,438,534.45 = 4,615,986.30/x - Step 3: Cross multiply
12,292,356.30x = 18,438,534.45 × 4,615,986.30 - Step 4: Simplify right side
12,292,356.30x = 85,112,022,413,278.03 - Step 5: Solve for x
x = 85,112,022,413,278.03/12,292,356.30 - Step 6: Final answer
x = 6,923,979.45
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.