Finding the Fourth Proportional to 1,115,412.21, 1,539,291.60 and 606,147.39
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Solution
The fourth proportional to 1,115,412.21, 1,539,291.60 and 606,147.39 is: 836,495.76
Step by Step Solution
- Step 1: Write the proportion equation
1,115,412.21 : 1,539,291.60 = 606,147.39 : x - Step 2: Convert to fraction form
1,115,412.21/1,539,291.60 = 606,147.39/x - Step 3: Cross multiply
1,115,412.21x = 1,539,291.60 × 606,147.39 - Step 4: Simplify right side
1,115,412.21x = 933,037,585,788.92 - Step 5: Solve for x
x = 933,037,585,788.92/1,115,412.21 - Step 6: Final answer
x = 836,495.76
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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.