Finding the Fourth Proportional to 1,129,801.12, 1,559,201.88 and 620,508.76
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Solution
The fourth proportional to 1,129,801.12, 1,559,201.88 and 620,508.76 is: 856,344.01
Step by Step Solution
- Step 1: Write the proportion equation
1,129,801.12 : 1,559,201.88 = 620,508.76 : x - Step 2: Convert to fraction form
1,129,801.12/1,559,201.88 = 620,508.76/x - Step 3: Cross multiply
1,129,801.12x = 1,559,201.88 × 620,508.76 - Step 4: Simplify right side
1,129,801.12x = 967,498,425,148.47 - Step 5: Solve for x
x = 967,498,425,148.47/1,129,801.12 - Step 6: Final answer
x = 856,344.01
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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.