Finding the Fourth Proportional to 1,646,945.70, 2,272,266.97 and 921,678.18
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Solution
The fourth proportional to 1,646,945.70, 2,272,266.97 and 921,678.18 is: 1,271,625.95
Step by Step Solution
- Step 1: Write the proportion equation
1,646,945.70 : 2,272,266.97 = 921,678.18 : x - Step 2: Convert to fraction form
1,646,945.70/2,272,266.97 = 921,678.18/x - Step 3: Cross multiply
1,646,945.70x = 2,272,266.97 × 921,678.18 - Step 4: Simplify right side
1,646,945.70x = 2,094,298,885,383.72 - Step 5: Solve for x
x = 2,094,298,885,383.72/1,646,945.70 - Step 6: Final answer
x = 1,271,625.95
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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.