Finding the Fourth Proportional to 1,622,420.61, 2,239,239.96 and 1,042,368.85
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Solution
The fourth proportional to 1,622,420.61, 2,239,239.96 and 1,042,368.85 is: 1,438,661.45
Step by Step Solution
- Step 1: Write the proportion equation
1,622,420.61 : 2,239,239.96 = 1,042,368.85 : x - Step 2: Convert to fraction form
1,622,420.61/2,239,239.96 = 1,042,368.85/x - Step 3: Cross multiply
1,622,420.61x = 2,239,239.96 × 1,042,368.85 - Step 4: Simplify right side
1,622,420.61x = 2,334,113,981,979.25 - Step 5: Solve for x
x = 2,334,113,981,979.25/1,622,420.61 - Step 6: Final answer
x = 1,438,661.45
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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.