Finding the Fourth Proportional to 879,478.53, 1,213,684.86 and 497,497.11
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Solution
The fourth proportional to 879,478.53, 1,213,684.86 and 497,497.11 is: 686,548.55
Step by Step Solution
- Step 1: Write the proportion equation
879,478.53 : 1,213,684.86 = 497,497.11 : x - Step 2: Convert to fraction form
879,478.53/1,213,684.86 = 497,497.11/x - Step 3: Cross multiply
879,478.53x = 1,213,684.86 × 497,497.11 - Step 4: Simplify right side
879,478.53x = 603,804,707,615.05 - Step 5: Solve for x
x = 603,804,707,615.05/879,478.53 - Step 6: Final answer
x = 686,548.55
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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.