Finding the Fourth Proportional to 985,681.17, 1,478,704.01 and 311,932.08
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Solution
The fourth proportional to 985,681.17, 1,478,704.01 and 311,932.08 is: 467,955.80
Step by Step Solution
- Step 1: Write the proportion equation
985,681.17 : 1,478,704.01 = 311,932.08 : x - Step 2: Convert to fraction form
985,681.17/1,478,704.01 = 311,932.08/x - Step 3: Cross multiply
985,681.17x = 1,478,704.01 × 311,932.08 - Step 4: Simplify right side
985,681.17x = 461,255,215,983.98 - Step 5: Solve for x
x = 461,255,215,983.98/985,681.17 - Step 6: Final answer
x = 467,955.80
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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.