Finding the Fourth Proportional to 1,383,262.99, 1,908,899.16 and 771,416.40
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Solution
The fourth proportional to 1,383,262.99, 1,908,899.16 and 771,416.40 is: 1,064,552.54
Step by Step Solution
- Step 1: Write the proportion equation
1,383,262.99 : 1,908,899.16 = 771,416.40 : x - Step 2: Convert to fraction form
1,383,262.99/1,908,899.16 = 771,416.40/x - Step 3: Cross multiply
1,383,262.99x = 1,908,899.16 × 771,416.40 - Step 4: Simplify right side
1,383,262.99x = 1,472,556,125,128.60 - Step 5: Solve for x
x = 1,472,556,125,128.60/1,383,262.99 - Step 6: Final answer
x = 1,064,552.54
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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.