Finding the Fourth Proportional to 1,069,128.01, 1,475,396.57 and 639,408.13
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Solution
The fourth proportional to 1,069,128.01, 1,475,396.57 and 639,408.13 is: 882,383.17
Step by Step Solution
- Step 1: Write the proportion equation
1,069,128.01 : 1,475,396.57 = 639,408.13 : x - Step 2: Convert to fraction form
1,069,128.01/1,475,396.57 = 639,408.13/x - Step 3: Cross multiply
1,069,128.01x = 1,475,396.57 × 639,408.13 - Step 4: Simplify right side
1,069,128.01x = 943,380,561,832.11 - Step 5: Solve for x
x = 943,380,561,832.11/1,069,128.01 - Step 6: Final answer
x = 882,383.17
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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.