Finding the Fourth Proportional to 824,774.96, 1,138,135.56 and 485,177.60
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Solution
The fourth proportional to 824,774.96, 1,138,135.56 and 485,177.60 is: 669,513.39
Step by Step Solution
- Step 1: Write the proportion equation
824,774.96 : 1,138,135.56 = 485,177.60 : x - Step 2: Convert to fraction form
824,774.96/1,138,135.56 = 485,177.60/x - Step 3: Cross multiply
824,774.96x = 1,138,135.56 × 485,177.60 - Step 4: Simplify right side
824,774.96x = 552,197,879,475.46 - Step 5: Solve for x
x = 552,197,879,475.46/824,774.96 - Step 6: Final answer
x = 669,513.39
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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.