Finding the Fourth Proportional to 692,231.70, 955,278.81 and 390,425.70
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Solution
The fourth proportional to 692,231.70, 955,278.81 and 390,425.70 is: 538,786.94
Step by Step Solution
- Step 1: Write the proportion equation
692,231.70 : 955,278.81 = 390,425.70 : x - Step 2: Convert to fraction form
692,231.70/955,278.81 = 390,425.70/x - Step 3: Cross multiply
692,231.70x = 955,278.81 × 390,425.70 - Step 4: Simplify right side
692,231.70x = 372,965,398,089.42 - Step 5: Solve for x
x = 372,965,398,089.42/692,231.70 - Step 6: Final answer
x = 538,786.94
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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.