Finding the Fourth Proportional to 742,112.12, 1,024,114.28 and 402,580.38
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Solution
The fourth proportional to 742,112.12, 1,024,114.28 and 402,580.38 is: 555,560.68
Step by Step Solution
- Step 1: Write the proportion equation
742,112.12 : 1,024,114.28 = 402,580.38 : x - Step 2: Convert to fraction form
742,112.12/1,024,114.28 = 402,580.38/x - Step 3: Cross multiply
742,112.12x = 1,024,114.28 × 402,580.38 - Step 4: Simplify right side
742,112.12x = 412,288,316,005.83 - Step 5: Solve for x
x = 412,288,316,005.83/742,112.12 - Step 6: Final answer
x = 555,560.68
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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.