Finding the Fourth Proportional to 690,974.14, 953,036.74 and 457,979.70
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Solution
The fourth proportional to 690,974.14, 953,036.74 and 457,979.70 is: 631,675.56
Step by Step Solution
- Step 1: Write the proportion equation
690,974.14 : 953,036.74 = 457,979.70 : x - Step 2: Convert to fraction form
690,974.14/953,036.74 = 457,979.70/x - Step 3: Cross multiply
690,974.14x = 953,036.74 × 457,979.70 - Step 4: Simplify right side
690,974.14x = 436,471,480,274.18 - Step 5: Solve for x
x = 436,471,480,274.18/690,974.14 - Step 6: Final answer
x = 631,675.56
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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.